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YouTube - History
YouTube.com
YouTube is a video-sharing website on which users can upload, share and view videos, created by three former PayPal employees in February 2005.
The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5technology to display a wide variety of user-generated video content, including movie clips, TV clips, and music videos, as well as amateur content such as video blogging and short original videos. Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, BBC, Vevo, Hulu and other organizations offer some of their material via the site, as part of the YouTube partnership program.
Unregistered users may watch videos, and registered users may upload an unlimited number of videos. Videos that are considered to contain potentially offensive content are available only to registered users 18 years old and older. In November 2006, YouTube, LLC was bought by Google Inc. for $1.65 billion, and now operates as a subsidiary of Google.
Company history
From left to right: Chad Hurley, Steve Chen, and Jawed Karim
YouTube was founded by Chad Hurley, Steve Chen, and Jawed Karim, who were all early employees of PayPal.Hurley had studied design at Indiana University of Pennsylvania, while Chen and Karim studied computer science together at the University of Illinois at Urbana-Champaign.
According to a story that has often been repeated in the media, Hurley and Chen developed the idea for YouTube during the early months of 2005, after they had experienced difficulty sharing videos that had been shot at a dinner party at Chen's apartment in San Francisco. Karim did not attend the party and denied that it had occurred, while Hurley commented that the idea that YouTube was founded after a dinner party "was probably very strengthened by marketing ideas around creating a story that was very digestible."
YouTube began as a venture-funded technology startup, primarily from a $11.5 million investment by Sequoia Capital between November 2005 and April 2006.YouTube's early headquarters were situated above a pizzeria and Japanese restaurant in San Mateo, California. The domain name www.youtube.com was activated on February 14, 2005, and the website was developed over the subsequent months.
The first YouTube video was entitled Me at the zoo, and shows founder Karim at the San Diego Zoo. The video was uploaded on April 23, 2005, and can still be viewed on the site.
YouTube offered the public a beta test of the site in May 2005, six months before the official launch in November 2005. The site grew rapidly, and in July 2006 the company announced that more than 65,000 new videos were being uploaded every day, and that the site was receiving 100 million video views per day. According to data published by market research company comScore, YouTube is the dominant provider of online video in the United States, with a market share of around 43 percent and more than 14 billion videos viewed in May 2010. YouTube says that over 48 hours of new videos are uploaded to the site every minute, and that around three quarters of the material comes from outside the US. It is estimated that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000.Alexa ranks YouTube as the third most visited website on the Internet, behind Google and Facebook.
The choice of the name www.youtube.com led to problems for a similarly named website, www.utube.com. The owner of the site, Universal Tube & Rollform Equipment, filed a lawsuit against YouTube in November 2006 after being overloaded on a regular basis by people looking for YouTube. Universal Tube has since changed the name of its website to www.utubeonline.com.In October 2006, Google Inc. announced that it had acquired YouTube for $1.65 billion in Google stock, and the deal was finalized on November 13, 2006. Google does not provide detailed figures for YouTube's running costs, and YouTube's revenues in 2007 were noted as "not material" in a regulatory filing. In June 2008, a Forbes magazine article projected the 2008 revenue at $200 million, noting progress in advertising sales.
In November 2008, YouTube reached an agreement with MGM, Lions Gate Entertainment, and CBS, allowing the companies to post full-length films and television episodes on the site, accompanied by advertisements in a section for US viewers called "Shows". The move was intended to create competition with websites such as Hulu, which features material from NBC, Fox, and Disney.In November 2009, YouTube launched a version of "Shows" available to UK viewers, offering around 4,000 full-length shows from more than 60 partners. In January 2010, YouTube introduced an online film rentals service, which is currently available only to users in the US. The service offers over 6,000 films.
YouTube's current headquarters in San Bruno, California
In March 2010, YouTube began free streaming of certain content, including 60 cricket matches of the Indian Premier League. According to YouTube, this was the first worldwide free online broadcast of a major sporting event.
On March 31, 2010, the YouTube website launched a new design, with the aim of simplifying the interface and increasing the time users spend on the site. Google product manager Shiva Rajaraman commented: "We really felt like we needed to step back and remove the clutter."
In May 2010, it was reported that YouTube was serving more than two billion videos a day, which it described as "nearly double the prime-time audience of all three major US television networks combined." In May 2011, YouTube reported in its company blog that the site was receiving more than three billion views per day.
In October 2010, Hurley announced that he would be stepping down as chief executive officer of YouTube to take an advisory role, and that Salar Kamangar would take over as head of the company.
In April 2011, James Zern, a YouTube software engineer, revealed that 30 percent of videos accounted for 99 percent of views on the site.
Features
Video technology
Playback
Viewing YouTube videos on a personal computer requires the Adobe Flash Player plug-in to be installed on the browser. The Adobe Flash Player plug-in is one of the most common pieces of software installed on personal computers and accounts for almost 75% of online video material.
In January 2010, YouTube launched an experimental version of the site that uses the built-in multimedia capabilities of web browsers supporting the HTML5 standard. This allows videos to be viewed without requiring Adobe Flash Player or any other plug-in to be installed.The YouTube site has a page that allows supported browsers to opt in to the HTML5 trial. Only browsers that support HTML5 Video using the H.264 or WebM formats can play the videos, and not all videos on the site are available.
Uploading
Videos uploaded to YouTube by standard account holders are limited to 15 minutes in duration. When YouTube was launched in 2005, it was possible to upload longer videos, but a ten-minute limit was introduced in March 2006 after YouTube found that the majority of videos exceeding this length were unauthorized uploads of television shows and films. The 10-minute limit was increased to 15 minutes in July 2010. Partner accounts are permitted to upload longer videos, subject to acceptance by YouTube. File size is limited to 2 GB for uploads from YouTube web page, and to 20 GB if Java-based Advanced Uploader is used. In December 2010, YouTube announced that holders of standard accounts would be allowed to upload videos of unlimited length, provided that they have a good history of following the site's Community Guidelines and policy on copyright. YouTube accepts videos uploaded in most container formats, including .AVI, .MKV, .MOV, .MP4, DivX, .FLV, and .ogg and .ogv. These include video formats such as MPEG-4, MPEG, VOB, and .WMV. It also supports 3GP, allowing videos to be uploaded from mobile phones.Videos with progressive scanning or interlaced scanning can be uploaded, but for the best video quality, YouTube prefers interlaced videos to be deinterlaced prior to uploading. All the video formats on YouTube use progressive scanning.
Quality and codecs
YouTube originally offered videos at only one quality level, displayed at a resolution of 320x240 pixels using the Sorenson Spark codec (a variant of H.263), with mono MP3 audio. In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones.In March 2008, a high quality mode was added, which increased the resolution to 480x360 pixels In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9. With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096x3072 pixels
YouTube videos are available in a range of quality levels. The former names of standard quality (SQ), high quality (HQ) and high definition (HD) have been replaced by numerical values representing the vertical resolution of the video. The default video stream is encoded in H.264/MPEG-4 AVC format, with stereo AAC audio.
^ 1 fmt was an undocumented URL parameter that allowed selecting YouTube quality mode without using player user interface. Since December 2010 this parameter is no longer supported.
^ 2 Approximate values based on statistical data; actual bitrate can be higher or lower due to variable encoding rate.
3D videos
In a video posted on July 21, 2009, YouTube software engineer Peter Bradshaw announced that YouTube users can now upload 3D videos. The videos can be viewed in several different ways, including the common anaglyph (cyan/red lens) method which utilizes glasses worn by the viewer to achieve the 3D effect. The YouTube Flash player can display stereoscopic content interleaved in rows, columns or a checkerboard pattern, side-by-side or anaglyph using a red/cyan, green/magenta or blue/yellow combination. In May 2011, an HTML5 version of the YouTube player began supporting side-by-side 3D footage that is compatible with Nvidia 3D Vision.
Content accessibility
One of the key features of YouTube is the ability of users to view its videos on web pages outside the site. Each YouTube video is accompanied by a piece of HTML, which can be used to embed it on a page outside the YouTube website. This functionality is often used to embed YouTube videos in social networking pages and blogs.Embedding, as well as ranking and commenting, can be disabled by the video owner.
YouTube does not usually offer a download link for its videos, and intends for them to be viewed through its website interface. A small number of videos, such as the weekly addresses by President Barack Obama, can be downloaded as MP4 files.Numerous third-party web sites, applications and browser plug-ins allow users to download YouTube videos. In February 2009, YouTube announced a test service, allowing some partners to offer video downloads for free or for a fee paid through Google Checkout.
Platforms
Some smartphones are capable of accessing YouTube videos, dependent on the provider and the data plan. YouTube Mobile was launched in June 2007, and uses RTSP streaming for the video.Not all of YouTube's videos are available on the mobile version of the site.
Since June 2007, YouTube's videos have been available for viewing on a range of Apple products. This required YouTube's content to be transcoded into Apple's preferred video standard, H.264, a process that took several months. YouTube videos can be viewed on devices including Apple TV, iPod Touch and the iPhone. A TiVo service update in July 2008 allowed the system to search and play YouTube videos. In January 2009, YouTube launched "YouTube for TV", a version of the website tailored for set-top boxes and other TV-based media devices with web browsers, initially allowing its videos to be viewed on the PlayStation 3 and Wii video game consoles. In June 2009, YouTube XL was introduced, which has a simplified interface designed for viewing on a standard television screen.
Localization
On June 19, 2007, Google CEO Eric Schmidt was in Paris to launch the new localization system.
The interface of the website is available with localized versions in 31 countries and a worldwide version.
The YouTube interface suggests which local version should be chosen on the basis of the IP address of the user. In some cases, the message "This video is not available in your country" may appear because of copyright restrictions or inappropriate content.
The interface of the YouTube website is available in 30 different languages, including Catalan, Danish, Finnish, Greek, Hungarian, Norwegian and Slovene, which do not have local channel versions.
Plans for YouTube to create a local version in Turkey have run into problems, since the Turkish authorities asked YouTube to set up an office in Turkey, which would be subject to Turkish law. YouTube says that it has no intention of doing this, and that its videos are not subject to Turkish law. Turkish authorities have expressed concerns that YouTube has been used to post videos insulting to Mustafa Kemal Atatürk and some material offensive to Muslims.
In March 2009, a dispute between YouTube and the British royalty collection agency PRS for Music led to premium music videos being blocked for YouTube users in the United Kingdom. The removal of videos posted by the major record companies occurred after failure to reach agreement on a licensing deal. The dispute was resolved in September 2009. In April 2009, a similar dispute led to the removal of premium music videos for users in Germany.
April Fools
YouTube has featured an April Fools prank on the site on April 1 of every year since 2008:
2008: All the links to the videos on the main page were redirected to Rick Astley's music video "Never Gonna Give You Up", a prank known as "Rickrolling".
2009: When clicking on a video on the main page, the whole page turned upside down. YouTube claimed that this was a new layout.
2010: YouTube temporarily released a "TEXTp" mode, which translated the colors in the videos to random upper case letters. YouTube claimed in a message that this was done in order to reduce bandwidth costs by $1 per second.
2011: The site celebrated its "100th anniversary" with a "1911 button" and a range of sepia-toned silent, early 1900s-style films, including "Flugelhorn Feline", a parody of Keyboard Cat.
Censorship and filtering
Several countries have blocked access to YouTube, including:
As of December 2010, YouTube is blocked in the People's Republic of China.
Morocco shut down access to YouTube in 2008.
Thailand blocked YouTube between 2006 and 2007 due to offensive videos relating to King Bhumibol Adulyadej.
Turkey blocked access to YouTube between 2008 and 2010 after controversy over videos deemed insulting to Mustafa Kemal Atatürk.The block was lifted briefly but reimposed in November 2010.
On December 3, 2006, Iran temporarily blocked access to YouTube, along with several other sites, after declaring them as violating social and moral codes of conduct. The YouTube block came after a video was posted online that appeared to show an Iranian soap opera star having sex. The block was later lifted and then reinstated after Iran's 2009 presidential election.
On February 23, 2008, Pakistan blocked YouTube because of "offensive material" towards the Islamic faith, including display of the Danish cartoons of the prophet Muhammad. This led to a near global blackout of the YouTube site for around two hours, as the Pakistani block was inadvertently transferred to other countries. Pakistan lifted its block on February 26, 2008. Many Pakistanis circumvented the three-day block by using virtual private network software. In May 2010, following the Everybody Draw Mohammed Day, Pakistan again blocked access to YouTube, citing "growing sacrilegious content".
On January 24, 2010, Libya blocked access to YouTube after it featured videos of demonstrations in the Libyan city of Benghazi by families of detainees who were killed in Abu Salim prison in 1996, and videos of family members of Libyan leader Muammar Gaddafi at parties. The blocking was criticized by Human Rights Watch.
Some schools have blocked access to YouTube, citing the inability to determine what sort of video material might be accessed by students.
YouTube was awarded a 2008 Peabody Award and cited for being "a 'Speakers' Corner' that both embodies and promotes democracy."
Entertainment Weekly put it on its end-of-the-decade "best-of" list. It said: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."
Social impact
Charlie Bit My Finger is YouTube's most-viewed user generated video.
Before the launch of YouTube in 2005, there were few easy methods available for ordinary computer users who wanted to post videos online. With its simple interface, YouTube made it possible for anyone with an Internet connection to post a video that a worldwide audience could watch within a few minutes. The wide range of topics covered by YouTube has turned video sharing into one of the most important parts of Internet culture.
An early example of the social impact of YouTube was the success of The Bus Uncle video in 2006. It shows a heated conversation between a youth and an older man on a bus in Hong Kong, and was discussed widely in the mainstream media. Another YouTube video to receive extensive coverage is guitar,which features a performance of Pachelbel's Canon on an electric guitar. The name of the performer is not given in the video. After it received millions of views The New York Times revealed the identity of the guitarist as Lim Jeong-hyun, a 23-year-old from South Korea who had recorded the track in his bedroom.
Charlie Bit My Finger, which was uploaded on May 22, 2007, is a viral video that has received the most views of any user generated YouTube video, with over 300 million views. The clip features two English brothers, with one-year-old Charlie biting the finger of his brother Harry, aged three. In Time's list of YouTube's 50 greatest viral videos of all time, "Charlie Bit My Finger" was ranked at number one.
Criticism
Copyrighted material
YouTube has been criticized for failing to ensure that uploaded videos comply with copyright law. At the time of uploading a video, YouTube users are shown a screen with the message "Do not upload any TV shows, music videos, music concerts or advertisements without permission, unless they consist entirely of content that you created yourself". Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a takedown notice pursuant to the terms of the Digital Millennium Copyright Act.
Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material. Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works". Since Viacom filed its lawsuit, YouTube has introduced a system called Video ID, which checks uploaded videos against a database of copyrighted content with the aim of reducing violations. In June 2010, Viacom's lawsuit against Google was rejected in a summary judgment, with U.S. federal Judge Louis L. Stanton stating that Google was protected by provisions of the Digital Millennium Copyright Act. Viacom announced its intention to appeal the ruling.
In August 2008, a US court ruled in Lenz v. Universal Music Corp. that copyright holders cannot order the removal of an online file without first determining whether the posting reflected fair use of the material. The case involved Stephanie Lenz from Gallitzin, Pennsylvania, who had made a home video of her 13-month-old son dancing to Prince's song "Let's Go Crazy", and posted the 29-second video on YouTube.
Privacy
In July 2008, Viacom won a court ruling requiring YouTube to hand over data detailing the viewing habits of every user who has watched videos on the site. The move led to concerns that the viewing habits of individual users could be identified through a combination of their IP addresses and log in names. The decision was criticized by the Electronic Frontier Foundation, which called the court ruling "a setback to privacy rights".U.S. District Court Judge Louis L. Stanton dismissed the privacy concerns as "speculative", and ordered YouTube to hand over documents totaling around 12 terabytes of data. Judge Stanton rejected Viacom's request that YouTube hand over the source code of its search engine, saying that it was a trade secret.
Controversial content
YouTube has also faced criticism over the offensive content in some of its videos. The uploading of videos containing defamation, pornography, and material encouraging criminal conduct is prohibited by YouTube's terms of service. Controversial areas have included Holocaust denial and the Hillsborough disaster, in which 96 football fans from Liverpool were crushed to death in 1989.
YouTube relies on its users to flag the content of videos as inappropriate, and a YouTube employee will view a flagged video to determine whether it violates the site's terms of service. However, this procedure has been criticized by the United Kingdom government. In July 2008, the Culture and Media Committee of the House of Commons of the United Kingdom stated that it was "unimpressed" with YouTube's system for policing its videos, and argued that "Proactive review of content should be standard practice for sites hosting user-generated content." YouTube responded by stating:
We have strict rules on what's allowed, and a system that enables anyone who sees inappropriate content to report it to our 24/7 review team and have it dealt with promptly. We educate our community on the rules and include a direct link from every YouTube page to make this process as easy as possible for our users. Given the volume of content uploaded on our site, we think this is by far the most effective way to make sure that the tiny minority of videos that break the rules come down quickly.
In October 2010, U.S. Congressman Anthony Weiner urged YouTube to take down from its website videos of imam Anwar al-Awlaki, tied to the accused Fort Hood shooter, Christmas Day bomber, and attempted Times Square bomber, and on the U.S. targeted killing list, saying that by hosting al-Awlaki's messages, "We are facilitating the recruitment of homegrown terror." British security minister Pauline Neville-Jones commented: "These Web sites would categorically not be allowed in the U.K. They incite cold-blooded murder, and as such are surely contrary to the public good." In November 2010, YouTube removed from its site some of the hundreds of videos featuring al-Awlaki's calls to jihad. It stated that it had removed videos that violated the site’s guidelines prohibiting "dangerous or illegal activities such as bomb-making, hate speech and incitement to commit violent acts," or came from accounts "registered by a member of a designated foreign terrorist organization." In December 2010, YouTube added "promotes terrorism" to the list of reasons that users can give when flagging a video as inappropriate.
User comments
Most videos enable users to leave comments, and these have attracted attention for the negative aspects of both their form and content. When Time in 2006 praised Web 2.0 for enabling "community and collaboration on a scale never seen before", it added that YouTube "harnesses the stupidity of crowds as well as its wisdom. Some of the comments on YouTube make you weep for the future of humanity just for the spelling alone, never mind the obscenity and the naked hatred".The Guardian in 2009 described users' comments on YouTube as follows:
Juvenile, aggressive, misspelled, sexist, homophobic, swinging from raging at the contents of a video to providing a pointlessly detailed description followed by a LOL, YouTube comments are a hotbed of infantile debate and unashamed ignorance – with the occasional burst of wit shining through.
In September 2008, The Daily Telegraph commented that YouTube was "notorious" for "some of the most confrontational and ill-formed comment exchanges on the internet", and reported on YouTube Comment Snob, "a new piece of software that blocks rude and illiterate posts".
 | |
| Type | Subsidiary, limited liability company |
|---|---|
| Founded | February 2005 |
| Founder | Steve Chen Chad Hurley Jawed Karim |
| Headquarters | 901 Cherry Ave, San Bruno, California, United States |
| Area served | Worldwide |
| Key people | Salar Kamangar, CEO Chad Hurley, Advisor |
| Owner | Independent (2005–2006) Google Inc. (2006–present) |
| Slogan | Broadcast Yourself |
| Website | youtube.com (see list of localized domain names) |
| Alexa rank |  3 (February 2011) |
| Type of site | video hosting service |
| Advertising | Google AdSense |
| Registration | Optional (Only required for certain tasks such as viewing flagged videos, viewing flagged comments and uploading videos) |
| Available in | 34 languages available through user interface |
| Launched | February 14, 2005 |
| Current status | Active |
The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5technology to display a wide variety of user-generated video content, including movie clips, TV clips, and music videos, as well as amateur content such as video blogging and short original videos. Most of the content on YouTube has been uploaded by individuals, although media corporations including CBS, BBC, Vevo, Hulu and other organizations offer some of their material via the site, as part of the YouTube partnership program.
Unregistered users may watch videos, and registered users may upload an unlimited number of videos. Videos that are considered to contain potentially offensive content are available only to registered users 18 years old and older. In November 2006, YouTube, LLC was bought by Google Inc. for $1.65 billion, and now operates as a subsidiary of Google.
Company history
From left to right: Chad Hurley, Steve Chen, and Jawed Karim
YouTube was founded by Chad Hurley, Steve Chen, and Jawed Karim, who were all early employees of PayPal.Hurley had studied design at Indiana University of Pennsylvania, while Chen and Karim studied computer science together at the University of Illinois at Urbana-Champaign.
According to a story that has often been repeated in the media, Hurley and Chen developed the idea for YouTube during the early months of 2005, after they had experienced difficulty sharing videos that had been shot at a dinner party at Chen's apartment in San Francisco. Karim did not attend the party and denied that it had occurred, while Hurley commented that the idea that YouTube was founded after a dinner party "was probably very strengthened by marketing ideas around creating a story that was very digestible."
YouTube began as a venture-funded technology startup, primarily from a $11.5 million investment by Sequoia Capital between November 2005 and April 2006.YouTube's early headquarters were situated above a pizzeria and Japanese restaurant in San Mateo, California. The domain name www.youtube.com was activated on February 14, 2005, and the website was developed over the subsequent months.
The first YouTube video was entitled Me at the zoo, and shows founder Karim at the San Diego Zoo. The video was uploaded on April 23, 2005, and can still be viewed on the site.
YouTube offered the public a beta test of the site in May 2005, six months before the official launch in November 2005. The site grew rapidly, and in July 2006 the company announced that more than 65,000 new videos were being uploaded every day, and that the site was receiving 100 million video views per day. According to data published by market research company comScore, YouTube is the dominant provider of online video in the United States, with a market share of around 43 percent and more than 14 billion videos viewed in May 2010. YouTube says that over 48 hours of new videos are uploaded to the site every minute, and that around three quarters of the material comes from outside the US. It is estimated that in 2007 YouTube consumed as much bandwidth as the entire Internet in 2000.Alexa ranks YouTube as the third most visited website on the Internet, behind Google and Facebook.
The choice of the name www.youtube.com led to problems for a similarly named website, www.utube.com. The owner of the site, Universal Tube & Rollform Equipment, filed a lawsuit against YouTube in November 2006 after being overloaded on a regular basis by people looking for YouTube. Universal Tube has since changed the name of its website to www.utubeonline.com.In October 2006, Google Inc. announced that it had acquired YouTube for $1.65 billion in Google stock, and the deal was finalized on November 13, 2006. Google does not provide detailed figures for YouTube's running costs, and YouTube's revenues in 2007 were noted as "not material" in a regulatory filing. In June 2008, a Forbes magazine article projected the 2008 revenue at $200 million, noting progress in advertising sales.
In November 2008, YouTube reached an agreement with MGM, Lions Gate Entertainment, and CBS, allowing the companies to post full-length films and television episodes on the site, accompanied by advertisements in a section for US viewers called "Shows". The move was intended to create competition with websites such as Hulu, which features material from NBC, Fox, and Disney.In November 2009, YouTube launched a version of "Shows" available to UK viewers, offering around 4,000 full-length shows from more than 60 partners. In January 2010, YouTube introduced an online film rentals service, which is currently available only to users in the US. The service offers over 6,000 films.
YouTube's current headquarters in San Bruno, California
In March 2010, YouTube began free streaming of certain content, including 60 cricket matches of the Indian Premier League. According to YouTube, this was the first worldwide free online broadcast of a major sporting event.
On March 31, 2010, the YouTube website launched a new design, with the aim of simplifying the interface and increasing the time users spend on the site. Google product manager Shiva Rajaraman commented: "We really felt like we needed to step back and remove the clutter."
In May 2010, it was reported that YouTube was serving more than two billion videos a day, which it described as "nearly double the prime-time audience of all three major US television networks combined." In May 2011, YouTube reported in its company blog that the site was receiving more than three billion views per day.
In October 2010, Hurley announced that he would be stepping down as chief executive officer of YouTube to take an advisory role, and that Salar Kamangar would take over as head of the company.
In April 2011, James Zern, a YouTube software engineer, revealed that 30 percent of videos accounted for 99 percent of views on the site.
Features
Video technology
Playback
Viewing YouTube videos on a personal computer requires the Adobe Flash Player plug-in to be installed on the browser. The Adobe Flash Player plug-in is one of the most common pieces of software installed on personal computers and accounts for almost 75% of online video material.
In January 2010, YouTube launched an experimental version of the site that uses the built-in multimedia capabilities of web browsers supporting the HTML5 standard. This allows videos to be viewed without requiring Adobe Flash Player or any other plug-in to be installed.The YouTube site has a page that allows supported browsers to opt in to the HTML5 trial. Only browsers that support HTML5 Video using the H.264 or WebM formats can play the videos, and not all videos on the site are available.
Uploading
Videos uploaded to YouTube by standard account holders are limited to 15 minutes in duration. When YouTube was launched in 2005, it was possible to upload longer videos, but a ten-minute limit was introduced in March 2006 after YouTube found that the majority of videos exceeding this length were unauthorized uploads of television shows and films. The 10-minute limit was increased to 15 minutes in July 2010. Partner accounts are permitted to upload longer videos, subject to acceptance by YouTube. File size is limited to 2 GB for uploads from YouTube web page, and to 20 GB if Java-based Advanced Uploader is used. In December 2010, YouTube announced that holders of standard accounts would be allowed to upload videos of unlimited length, provided that they have a good history of following the site's Community Guidelines and policy on copyright. YouTube accepts videos uploaded in most container formats, including .AVI, .MKV, .MOV, .MP4, DivX, .FLV, and .ogg and .ogv. These include video formats such as MPEG-4, MPEG, VOB, and .WMV. It also supports 3GP, allowing videos to be uploaded from mobile phones.Videos with progressive scanning or interlaced scanning can be uploaded, but for the best video quality, YouTube prefers interlaced videos to be deinterlaced prior to uploading. All the video formats on YouTube use progressive scanning.
Quality and codecs
YouTube originally offered videos at only one quality level, displayed at a resolution of 320x240 pixels using the Sorenson Spark codec (a variant of H.263), with mono MP3 audio. In June 2007, YouTube added an option to watch videos in 3GP format on mobile phones.In March 2008, a high quality mode was added, which increased the resolution to 480x360 pixels In November 2008, 720p HD support was added. At the time of the 720p launch, the YouTube player was changed from a 4:3 aspect ratio to a widescreen 16:9. With this new feature, YouTube began a switchover to H.264/MPEG-4 AVC as its default video compression format. In November 2009, 1080p HD support was added. In July 2010, YouTube announced that it had launched a range of videos in 4K format, which allows a resolution of up to 4096x3072 pixels
YouTube videos are available in a range of quality levels. The former names of standard quality (SQ), high quality (HQ) and high definition (HD) have been replaced by numerical values representing the vertical resolution of the video. The default video stream is encoded in H.264/MPEG-4 AVC format, with stereo AAC audio.
^ 1 fmt was an undocumented URL parameter that allowed selecting YouTube quality mode without using player user interface. Since December 2010 this parameter is no longer supported.
^ 2 Approximate values based on statistical data; actual bitrate can be higher or lower due to variable encoding rate.
3D videos
In a video posted on July 21, 2009, YouTube software engineer Peter Bradshaw announced that YouTube users can now upload 3D videos. The videos can be viewed in several different ways, including the common anaglyph (cyan/red lens) method which utilizes glasses worn by the viewer to achieve the 3D effect. The YouTube Flash player can display stereoscopic content interleaved in rows, columns or a checkerboard pattern, side-by-side or anaglyph using a red/cyan, green/magenta or blue/yellow combination. In May 2011, an HTML5 version of the YouTube player began supporting side-by-side 3D footage that is compatible with Nvidia 3D Vision.
Content accessibility
One of the key features of YouTube is the ability of users to view its videos on web pages outside the site. Each YouTube video is accompanied by a piece of HTML, which can be used to embed it on a page outside the YouTube website. This functionality is often used to embed YouTube videos in social networking pages and blogs.Embedding, as well as ranking and commenting, can be disabled by the video owner.
YouTube does not usually offer a download link for its videos, and intends for them to be viewed through its website interface. A small number of videos, such as the weekly addresses by President Barack Obama, can be downloaded as MP4 files.Numerous third-party web sites, applications and browser plug-ins allow users to download YouTube videos. In February 2009, YouTube announced a test service, allowing some partners to offer video downloads for free or for a fee paid through Google Checkout.
Platforms
Some smartphones are capable of accessing YouTube videos, dependent on the provider and the data plan. YouTube Mobile was launched in June 2007, and uses RTSP streaming for the video.Not all of YouTube's videos are available on the mobile version of the site.
Since June 2007, YouTube's videos have been available for viewing on a range of Apple products. This required YouTube's content to be transcoded into Apple's preferred video standard, H.264, a process that took several months. YouTube videos can be viewed on devices including Apple TV, iPod Touch and the iPhone. A TiVo service update in July 2008 allowed the system to search and play YouTube videos. In January 2009, YouTube launched "YouTube for TV", a version of the website tailored for set-top boxes and other TV-based media devices with web browsers, initially allowing its videos to be viewed on the PlayStation 3 and Wii video game consoles. In June 2009, YouTube XL was introduced, which has a simplified interface designed for viewing on a standard television screen.
Localization
On June 19, 2007, Google CEO Eric Schmidt was in Paris to launch the new localization system.
The interface of the website is available with localized versions in 31 countries and a worldwide version.
The YouTube interface suggests which local version should be chosen on the basis of the IP address of the user. In some cases, the message "This video is not available in your country" may appear because of copyright restrictions or inappropriate content.
The interface of the YouTube website is available in 30 different languages, including Catalan, Danish, Finnish, Greek, Hungarian, Norwegian and Slovene, which do not have local channel versions.
Plans for YouTube to create a local version in Turkey have run into problems, since the Turkish authorities asked YouTube to set up an office in Turkey, which would be subject to Turkish law. YouTube says that it has no intention of doing this, and that its videos are not subject to Turkish law. Turkish authorities have expressed concerns that YouTube has been used to post videos insulting to Mustafa Kemal Atatürk and some material offensive to Muslims.
In March 2009, a dispute between YouTube and the British royalty collection agency PRS for Music led to premium music videos being blocked for YouTube users in the United Kingdom. The removal of videos posted by the major record companies occurred after failure to reach agreement on a licensing deal. The dispute was resolved in September 2009. In April 2009, a similar dispute led to the removal of premium music videos for users in Germany.
April Fools
YouTube has featured an April Fools prank on the site on April 1 of every year since 2008:
2008: All the links to the videos on the main page were redirected to Rick Astley's music video "Never Gonna Give You Up", a prank known as "Rickrolling".
2009: When clicking on a video on the main page, the whole page turned upside down. YouTube claimed that this was a new layout.
2010: YouTube temporarily released a "TEXTp" mode, which translated the colors in the videos to random upper case letters. YouTube claimed in a message that this was done in order to reduce bandwidth costs by $1 per second.
2011: The site celebrated its "100th anniversary" with a "1911 button" and a range of sepia-toned silent, early 1900s-style films, including "Flugelhorn Feline", a parody of Keyboard Cat.
Censorship and filtering
Several countries have blocked access to YouTube, including:
As of December 2010, YouTube is blocked in the People's Republic of China.
Morocco shut down access to YouTube in 2008.
Thailand blocked YouTube between 2006 and 2007 due to offensive videos relating to King Bhumibol Adulyadej.
Turkey blocked access to YouTube between 2008 and 2010 after controversy over videos deemed insulting to Mustafa Kemal Atatürk.The block was lifted briefly but reimposed in November 2010.
On December 3, 2006, Iran temporarily blocked access to YouTube, along with several other sites, after declaring them as violating social and moral codes of conduct. The YouTube block came after a video was posted online that appeared to show an Iranian soap opera star having sex. The block was later lifted and then reinstated after Iran's 2009 presidential election.
On February 23, 2008, Pakistan blocked YouTube because of "offensive material" towards the Islamic faith, including display of the Danish cartoons of the prophet Muhammad. This led to a near global blackout of the YouTube site for around two hours, as the Pakistani block was inadvertently transferred to other countries. Pakistan lifted its block on February 26, 2008. Many Pakistanis circumvented the three-day block by using virtual private network software. In May 2010, following the Everybody Draw Mohammed Day, Pakistan again blocked access to YouTube, citing "growing sacrilegious content".
On January 24, 2010, Libya blocked access to YouTube after it featured videos of demonstrations in the Libyan city of Benghazi by families of detainees who were killed in Abu Salim prison in 1996, and videos of family members of Libyan leader Muammar Gaddafi at parties. The blocking was criticized by Human Rights Watch.
Some schools have blocked access to YouTube, citing the inability to determine what sort of video material might be accessed by students.
YouTube was awarded a 2008 Peabody Award and cited for being "a 'Speakers' Corner' that both embodies and promotes democracy."
Entertainment Weekly put it on its end-of-the-decade "best-of" list. It said: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."
Social impact
Charlie Bit My Finger is YouTube's most-viewed user generated video.
Before the launch of YouTube in 2005, there were few easy methods available for ordinary computer users who wanted to post videos online. With its simple interface, YouTube made it possible for anyone with an Internet connection to post a video that a worldwide audience could watch within a few minutes. The wide range of topics covered by YouTube has turned video sharing into one of the most important parts of Internet culture.
An early example of the social impact of YouTube was the success of The Bus Uncle video in 2006. It shows a heated conversation between a youth and an older man on a bus in Hong Kong, and was discussed widely in the mainstream media. Another YouTube video to receive extensive coverage is guitar,which features a performance of Pachelbel's Canon on an electric guitar. The name of the performer is not given in the video. After it received millions of views The New York Times revealed the identity of the guitarist as Lim Jeong-hyun, a 23-year-old from South Korea who had recorded the track in his bedroom.
Charlie Bit My Finger, which was uploaded on May 22, 2007, is a viral video that has received the most views of any user generated YouTube video, with over 300 million views. The clip features two English brothers, with one-year-old Charlie biting the finger of his brother Harry, aged three. In Time's list of YouTube's 50 greatest viral videos of all time, "Charlie Bit My Finger" was ranked at number one.
Criticism
Copyrighted material
YouTube has been criticized for failing to ensure that uploaded videos comply with copyright law. At the time of uploading a video, YouTube users are shown a screen with the message "Do not upload any TV shows, music videos, music concerts or advertisements without permission, unless they consist entirely of content that you created yourself". Despite this advice, there are still many unauthorized clips of copyrighted material on YouTube. YouTube does not view videos before they are posted online, and it is left to copyright holders to issue a takedown notice pursuant to the terms of the Digital Millennium Copyright Act.
Organizations including Viacom, Mediaset, and the English Premier League have filed lawsuits against YouTube, claiming that it has done too little to prevent the uploading of copyrighted material. Viacom, demanding $1 billion in damages, said that it had found more than 150,000 unauthorized clips of its material on YouTube that had been viewed "an astounding 1.5 billion times". YouTube responded by stating that it "goes far beyond its legal obligations in assisting content owners to protect their works". Since Viacom filed its lawsuit, YouTube has introduced a system called Video ID, which checks uploaded videos against a database of copyrighted content with the aim of reducing violations. In June 2010, Viacom's lawsuit against Google was rejected in a summary judgment, with U.S. federal Judge Louis L. Stanton stating that Google was protected by provisions of the Digital Millennium Copyright Act. Viacom announced its intention to appeal the ruling.
In August 2008, a US court ruled in Lenz v. Universal Music Corp. that copyright holders cannot order the removal of an online file without first determining whether the posting reflected fair use of the material. The case involved Stephanie Lenz from Gallitzin, Pennsylvania, who had made a home video of her 13-month-old son dancing to Prince's song "Let's Go Crazy", and posted the 29-second video on YouTube.
Privacy
In July 2008, Viacom won a court ruling requiring YouTube to hand over data detailing the viewing habits of every user who has watched videos on the site. The move led to concerns that the viewing habits of individual users could be identified through a combination of their IP addresses and log in names. The decision was criticized by the Electronic Frontier Foundation, which called the court ruling "a setback to privacy rights".U.S. District Court Judge Louis L. Stanton dismissed the privacy concerns as "speculative", and ordered YouTube to hand over documents totaling around 12 terabytes of data. Judge Stanton rejected Viacom's request that YouTube hand over the source code of its search engine, saying that it was a trade secret.
Controversial content
YouTube has also faced criticism over the offensive content in some of its videos. The uploading of videos containing defamation, pornography, and material encouraging criminal conduct is prohibited by YouTube's terms of service. Controversial areas have included Holocaust denial and the Hillsborough disaster, in which 96 football fans from Liverpool were crushed to death in 1989.
YouTube relies on its users to flag the content of videos as inappropriate, and a YouTube employee will view a flagged video to determine whether it violates the site's terms of service. However, this procedure has been criticized by the United Kingdom government. In July 2008, the Culture and Media Committee of the House of Commons of the United Kingdom stated that it was "unimpressed" with YouTube's system for policing its videos, and argued that "Proactive review of content should be standard practice for sites hosting user-generated content." YouTube responded by stating:
We have strict rules on what's allowed, and a system that enables anyone who sees inappropriate content to report it to our 24/7 review team and have it dealt with promptly. We educate our community on the rules and include a direct link from every YouTube page to make this process as easy as possible for our users. Given the volume of content uploaded on our site, we think this is by far the most effective way to make sure that the tiny minority of videos that break the rules come down quickly.
In October 2010, U.S. Congressman Anthony Weiner urged YouTube to take down from its website videos of imam Anwar al-Awlaki, tied to the accused Fort Hood shooter, Christmas Day bomber, and attempted Times Square bomber, and on the U.S. targeted killing list, saying that by hosting al-Awlaki's messages, "We are facilitating the recruitment of homegrown terror." British security minister Pauline Neville-Jones commented: "These Web sites would categorically not be allowed in the U.K. They incite cold-blooded murder, and as such are surely contrary to the public good." In November 2010, YouTube removed from its site some of the hundreds of videos featuring al-Awlaki's calls to jihad. It stated that it had removed videos that violated the site’s guidelines prohibiting "dangerous or illegal activities such as bomb-making, hate speech and incitement to commit violent acts," or came from accounts "registered by a member of a designated foreign terrorist organization." In December 2010, YouTube added "promotes terrorism" to the list of reasons that users can give when flagging a video as inappropriate.
User comments
Most videos enable users to leave comments, and these have attracted attention for the negative aspects of both their form and content. When Time in 2006 praised Web 2.0 for enabling "community and collaboration on a scale never seen before", it added that YouTube "harnesses the stupidity of crowds as well as its wisdom. Some of the comments on YouTube make you weep for the future of humanity just for the spelling alone, never mind the obscenity and the naked hatred".The Guardian in 2009 described users' comments on YouTube as follows:
Juvenile, aggressive, misspelled, sexist, homophobic, swinging from raging at the contents of a video to providing a pointlessly detailed description followed by a LOL, YouTube comments are a hotbed of infantile debate and unashamed ignorance – with the occasional burst of wit shining through.
In September 2008, The Daily Telegraph commented that YouTube was "notorious" for "some of the most confrontational and ill-formed comment exchanges on the internet", and reported on YouTube Comment Snob, "a new piece of software that blocks rude and illiterate posts".
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Apple iPhone 4
 | ||||||||
|---|---|---|---|---|---|---|---|---|
 Apple iPhone 4 (black UMTS/GSM model) | ||||||||
| Developer | Apple Inc. | |||||||
| Manufacturer | Foxconn (UMTS/GSM model) Pegatron (CDMA model) | |||||||
| Slogan | This changes everything. Again. | |||||||
| Form factor | Slate bar | |||||||
| Generation | 4 | |||||||
| Release date | GSM model (black): 24 June 2010 CDMA model (black): 10 February 2011 GSM and CDMA models (white): 28 April 2011 | |||||||
| Operating system | iOS 4.3.3 (build 8J2) (GSM) Released May 4, 2011 iOS 4.2.8 (build 8E401) (CDMA) Released May 4, 2011 | |||||||
| Power | Built-in rechargeable Li-ion battery 3.7 V at 1420 mAh | |||||||
| CPU | Apple A4 (ARM Cortex-A8) | |||||||
| GPU | Apple A4 (PowerVR SGX 535) | |||||||
| Storage capacity | 16 GB or 32 GB flash memory | |||||||
| Memory | 512 MB eDRAM | |||||||
| Display | 3.5-inch (89 mm) diagonal 1.5:1 aspect ratio widescreen LED backlit IPS TFT LCD Retina display 640×960 resolution at 326 ppi (0.61 Megapixels) 800:1 contrast ratio (typical) 500 cd/m2 max brightness (typical) Fingerprint-resistant oleophobic coating on front and back glass | |||||||
| Audio | Single loudspeaker 3.5 mm TRRS Frequency response: 20 Hz to 20 kHz | |||||||
| Input | Multi-touch touchscreen display Push-buttons Dual microphone 3-axis gyroscope 3-axis accelerometer Digital compass Proximity sensor Ambient light sensor | |||||||
| Rear camera | 5 MP back-side illuminated sensor HD video (720p) at 30 fps 1.75 μm size pixels 5× digital zoom Tap to focus video or still images LED flash Photo and video geotagging | |||||||
| Front camera | 0.3 MP (VGA) SD video (480p) at 30 fps 25.17 μm size pixels Tap to focus video or still images Photo and video geotagging | |||||||
| Connectivity | Wi-Fi (802.11 b/g/n) (2.4 GHz only) Bluetooth 2.1 + EDR GSM model: Quad-band GSM/GPRS/EDGE (800 850 900 1800 1900 MHz) Quad-band UMTS/HSDPA/HSUPA (800 850 900 1900 2100 MHz) (800 MHz not yet announced as supported by Apple) CDMA model: Dual-band CDMA/EV-DO Rev. A (800 1900 MHz) | |||||||
| Hearing aid compatibility | GSM 3G 850/1900 MHz M4, T4 2G 850 MHz M3, T3 2G 1900 MHz M2, T3 CDMA M4, T4 | |||||||
| Online services | App Store, iTunes Store, iBookstore, MobileMe | |||||||
| Dimensions | 115.2 mm (4.54 in) (h) 58.66 mm (2.309 in) (w) 9.3 mm (0.37 in) (d) | |||||||
| Weight | 137 g (4.8 oz) | |||||||
| Predecessor | iPhone 3GS | |||||||
| Website | Apple – iPhone | |||||||
The iPhone 4 is a touchscreen smartphone developed by Apple. It is the fourth generation of iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling (marketed by Apple as FaceTime), consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail access. It was announced on June 7, 2010, at the WWDC 2010 held at the Moscone Center, San Francisco, and was released on June 24, 2010, in the United States, the United Kingdom, France, Germany and Japan.
The iPhone 4 runs Apple's iOS operating system, the same operating system as used on previous iPhones, the iPad, and the iPod Touch. It is primarily controlled by a user's fingertips on the multi-touch display, which is sensitive to fingertip contact.
The most noticeable difference between the iPhone 4 and its predecessors is the new design, which incorporates an uninsulated stainless steel frame that acts as the device's antenna. The internal components of the device are situated between two panels of chemically strengthened aluminosilicate glass.It has an Apple A4 processor and 512 MB of eDRAM, twice that of its predecessor and four times that of the original iPhone. Its 3.5-inch (89 mm) LED backlit liquid crystal display with a 960×640 pixel resolution is marketed as the "Retina Display".
The latest operating system release is iOS 4.3.3 (for GSM) and 4.2.8 (for CDMA).
Prototypes
Prior to the official unveiling of the iPhone 4 on June 7, 2010, two prototypes were brought to the attention of the media, breaching Apple's normally secretive development process. Many of the speculations regarding technical specifications proved accurate.
Gizmodo Leak
On April 19, 2010, gadget website Gizmodo reported that they had purchased an iPhone prototype for $5000, and furthermore, had conducted a product teardown of the device. The prototype is reported to have been lost by an Apple employee, Gray Powell, in Redwood City, California.Shortly after Gizmodo published detailed information about the prototype, Apple's legal associates formally requested for the phone to be returned to Apple, and Gizmodo responded with the intent to cooperate.On April 22, officers from the Rapid Enforcement Allied Computer Team (REACT) task force of the California HTTAP Program raided the home of Jason Chen, the Gizmodo editor responsible for reviewing the prototype, seizing all of his computers and hard drives The Electronic Frontier Foundation criticized the raid as violating journalist source protection laws that forbid the seizure of journalist computers as well as the suspicion that Apple had used its influence as a member of the steering committee which is charged with direction and oversight of the California REACT task force to push police into action in a way that would not normally be conducted for this type of incident. Apple had already received the iPhone prototype prior to the raid when it was returned by Gizmodo. The District Attorney has stated that the investigation has been suspended, and discontinued searching through the Gizmodo editor's belongings as they determine whether the shield laws are applicable, and cautioned that no charges have been issued at this point.
Taoviet Leak
Pictures and video of a second prototype were published on a Vietnamese website, Taoviet, on May 12, 2010. It was almost identical to the first, and used an A4 chip manufactured by Apple. The website purchased the prototype for $4,000. DigiTimes reported that the screen resolution of the new phone was 960-by-640, which was confirmed by Apple at the iPhone 4's official announcement.
Release
Steve Jobs, Apple CEO, holding a white iPhone 4. The white iPhone 4 would not be released until April 2011.
The iPhone 4 was made available for pre-order on 15 June 2010. Customers attempting to pre-order the iPhone 4 reported problems with the pre-order process on the U.S. and U.K. online Apple Stores which crashed due to the surge in traffic. The same issue was reported with AT&T and SoftBank, Apple's exclusive partners in the United States and Japan respectively, who suspended advance sales of the iPhone 4 as demand threatened to exceed supply. Retail stores were also unable to complete pre-order transactions due to the servers crashing.Apple and its partner carriers received 600,000 pre-orders for the iPhone 4 in the first 24 hours, the largest number of pre-orders Apple has received in a single day for any device. Engadget reported that at 20:30 UTC, all iPhone 4 pre-order suppliers had sold out. 1.7 million iPhone 4s were sold in its first three days of availability.
The iPhone 4 has also been released through Orange in Tunisia and was available in eight cities at the launch. In South Korea, it was released by KT on September 10. In Israel, it was released, too, on September 24, through Cellcom, Pelephone and Orange. It was launched in Thailand on September 23 by AIS, DTAC and True Move, and in Malaysia on September 26 in Kuala Lumpur, and nationwide on September 27 according to the website of Maxis. The iPhone 4 was released in South Africa on September 22 on the Vodacom and MTN networks, in very limited quantities. The iPhone 4 was launched in Vietnam on September 30 by VinaPhone and Viettel, at first in 3 major cities: Hanoi, Ho Chi Minh city and Da Nang, and then all over the country by the end of October.
The iPhone 4 was launched in India on 27 May 2011 by Aircel and Airtel. Aircel is releasing the 16GB iPhone 4 for Indian Rupee symbol.svg34,500 and the 32GB one for Indian Rupee symbol.svg40,990. The smartphone will be available on a contract basis from both the service providers.
On January 11, 2011, Verizon announced during a media event that it had reached an agreement with Apple and would begin selling a CDMA iPhone 4 in the United States, ending Apple's exclusivity agreement with AT&T. The Verizon iPhone went on sale on February 10 and pre orders began on February 3.The Verizon iPhone includes the 'Personal Hotspot" feature which allows a user to use the iPhone as a wireless hotspot, with up to 5 devices connecting at one time. The February 3 presale of the iPhone 4 broke Verizon's first day sales records for a single device.
On 24 June 2010, Apple issued a statement that the white iPhone 4 models were proving more "challenging to manufacture" than expected, and initially pushed the release date back to the second half of July. There was a lot of speculation surrounding the delay of the white iPhone 4. Among the most popular rumors are those concerning the phone's internal camera being adversely affected by light leaking in due to the semi-translucent glass and the white paint. Other sources report that the problem relates to Apple's inability to match the white color of the front face plate with that of the home button. On April 27 Apple announced that it would be releasing the white iPhone 4 model on April 28, 2011 for both GSM and CDMA. The release of the white iPhone 4 was carried out on April 28, and is still available for purchase today.
Display
The display of the iPhone 4 is designed by Apple and is manufactured by LG. It features an LED backlit TFT LCD capacitive touchscreen with a pixel density of 326 pixels per inch (ppi) on a 3.5 in (8.9 cm) (diagonally measured), 960×640 display. Each pixel is 78 micrometres in width. The display has a contrast ratio of 800:1. The screen is marketed by Apple as the "Retina Display", based on the assertion that a display of approximately 300 ppi at a distance of 12 inches (305 mm) from one's eye is the maximum amount of detail that the human retina can perceive.With the iPhone expected to be used at a distance of about 12 inches from the eyes, a higher resolution would allegedly have no effect on the image's apparent quality as the maximum potential of the human eye has already been met.
This claim has been disputed. Raymond Soneira, president of DisplayMate Technologies, said in an interview with Wired Magazine, that the claims by Jobs are something of an exaggeration: "It is reasonably close to being a perfect display, but Steve pushed it a little too far." Soneira stated that the resolution of the human retina is higher than claimed by Apple, working out to 477 ppi at 12 inches (305 mm) from the eyes.
However, Phil Plait, author of Bad Astronomy, whose career includes a collaboration with NASA regarding the camera on the Hubble Space Telescope, responded to the criticism by stating that "if you have [better than 20/20] eyesight, then at one foot away the iPhone 4’s pixels are resolved. The picture will look pixellated. If you have average eyesight, the picture will look just fine."
Camera
The iPhone 4 is the first iPhone model to have two cameras. The LED flash for the rear-facing camera (top) and the forward-facing camera (bottom, left of speaker) are not present in older models.
The iPhone 4 features an additional front-facing VGA camera, and an improved (backside-illuminated, big physical pixel size) 5 megapixel rear-facing camera integrated with an LED flash. The rear-facing camera is capable of recording HD video in 720p at 30 frames per second. Both cameras make use of the tap to focus feature, part of iOS 4, for photo and video recording.The rear-facing camera has a 5× digital zoom.
Connectivity
In contrast to Steve Jobs' announcement at WWDC 2010, recent Federal Communications Commission documentation has shown that the iPhone 4 contains a Penta-Band 3G UMTS antenna, not a Quad-Band 3G UMTS radio, as advertised by Apple. According to the FCC documentation filed by Apple, the radio inside the iPhone 4 supports 800, 850, 900, 1900, and 2100 MHz. The 800 MHz frequency, which is most commonly used in Japanese mobile phones, is not advertised as being supported by Apple.[However, the 800 MHz band is a subset of the 850 MHz band, which probably explains why the device is advertised as Quad-Band. The chip-sets were manufactured by Skyworks Solutions and Infineon for GSM version.
As most of Apple's mobile products, the iPhone 4 also uses the 30 pin dock connector as its only external data port.
Gyroscope and accelerometer
The iPhone 4 introduces a gyroscopic sensor that detects 3-axis angular acceleration around the X, Y and Z axes, enabling precise calculation of yaw, pitch, and roll. The gyroscope complements the accelerometer, a sensor that has been present since the original iPhone, which detects the device's acceleration, shake, vibration shock, or fall by detecting linear acceleration along one of three axes (X, Y and Z). The combined data from the accelerometer and the gyroscope provides detailed and precise information about the device's 6-axis movement in space. The 3 axes of the gyroscope combined with the 3 axes of the accelerometer enable the device to recognize approximately how far, fast, and in which direction it has moved in space.
Processor and memory
The iPhone 4 is powered by the Apple A4 chip, which was designed by Intrinsity[citation needed] and, like all previous iPhone models, manufactured by Samsung.[44] This system-on-a-chip is composed of a Cortex-A8 CPU integrated with a PowerVR SGX 535 GPU. The Apple A4 is also used in the iPad where it is clocked at its rated speed of 1 GHz. The clock speed in the iPhone 4 has not been disclosed. All previous models of the iPhone have underclocked the CPU, which typically extends battery life and lowers heat dissipation.
The iPhone 4 has 512 MB of eDRAM. The additional eDRAM supports increased performance and multi-tasking.
Storage and Micro-SIM
The iPhone 4 uses a Micro-SIM card on iPhone 4 devices running on a GSM network, which is positioned in an ejectable tray, located on the right side of the device. On a CDMA network, however, the phone connects to the network using an ESN. All previous models have used regular Mini-SIM cards. Depending on the operator, Micro-SIM cards may not be available for all networks globally. As a technical workaround it is possible to trim a Mini-SIM card with a knife or scissors so that it fits into the Micro-SIM tray.
As on previous models, all data is stored in flash memory, 16GB or 32GB, and not on the SIM. Unlike previous generations, the storage capacity is not printed on the back of the unit.
Design
The iPhone 4 is constructed of glass faces and a metal rim.
The iPhone 4 features a redesigned structure, designed by Jonathan Ive. Most notably, the bulges of the back panel as well as the band between the front and back are gone and have been replaced with flattened surfaces. The redesign reflects the utilitarianism and uniformity of existing Apple products, such as the iPad and the iMac. From the side, the metal structure most resembles the original iPhone, but from the rear, the plastic evokes the iPhone 3G and 3GS. The general layout of the device remains the same. The overall dimensions of the iPhone 4 have been reduced from its predecessor. It is 4.5 inches (110 mm) high, 2.31 inches (59 mm) wide, and 0.37 inches (9.4 mm) deep, compared to the iPhone 3GS, which is 4.55 inches (116 mm) high, 2.44 inches (62 mm) wide, and 0.48 inches (12 mm) deep; making the iPhone 4 24% thinner than its predecessor, the iPhone 3GS. Steve Jobs claims that it is “the thinnest smartphone on the planet". The reduced size of the device is primarily due to the externally placed antenna.
The iPhone 4 is structured around a stainless steel frame that wraps around the edge of the phone, acting both as the primary structure for the device and as the iPhone 4's antennas. This metal band features two slits on the GSM version of the phone, one at the lower left, and one at the top (and a fake slit along the lower right, to cosmetically mirror the one at the lower left) that divide the band into two antenna sections: the left section of the band serves as the Bluetooth, Wi-Fi, and GPS antenna, and the right and lower sections of the band act as the antenna for GSM and UMTS connectivity. On the CDMA version of the phone, however, there are four slits in the metal band. Two at the top (on the left and right) and two at the bottom. This divides the metal band into four different segments, which like the GSM version of the phone, serves as different antennas for connectivity. The top portion of the band (divided by the top left and right slits) is for connecting to the CDMA network. The left portion of the metal band is for Bluetooth, Wi-Fi, and GPS just like the GSM version. The right side is not an antenna, but serves to cosmetically mirror the left side and also to create a similar look to the GSM version of the phone.
The internal components are situated between two panels of aluminosilicate glass, described by Apple as being "chemically strengthened to be 20 times stiffer and 30 times harder than plastic," theoretically allowing it to be more scratch resistant and durable than the previous models.
In fall 2010, Pentalobular screws started to replace the Philips screws used in post-repair units in the US and in production units in Japan.
FaceTime
The iPhone 4 supports FaceTime, an embedded video calling application that is able to use either the front or back camera over a Wi-Fi connection to communicate with another iPhone 4, the fourth-generation iPod Touch, or any Mac computer running Mac OS X 10.6 Snow Leopard.Accessories
Bumper
Additionally, the plastic band houses metallic buttons for the volume controls and sleep/wake button. The six holes in the Bumper enable access to the mute switch, dock connector, headphone jack, speaker, and microphones.The bumper also can be used to prevent the "antenna issue" that users face when holding the parts of the steel band where the antennas are, that could cause the phone's signal to drop
Technical issues
Some users have reported a yellow discoloration of the screen, which was attributed to the glass lamination glue that was used. It did not have time to dry fully before the unit reached consumers due to the speed of manufacturing. Another issue reported by some users within days of the iPhone 4 release was that during calls the proximity sensor can be insensitive, so that facial contact with the touchscreen can end calls, mute calls, and dial other numbers
Antenna
Shortly after the iPhone 4 was launched, some consumers reported that signal strength of the phone was reduced when touching the lower left edge of the phone, bridging one of the two locations which separates the two antennas, resulting in dropped calls in some areas with lower signal reception. In response, Apple issued a statement advising that customers should "avoid gripping [the phone] in the lower left corner" when making or receiving a call.
As a consequence of this problem, it was reported on July 2, 2010 that several iPhone 4 users were planning on suing Apple and AT&T for fraud by concealment, negligence, intentional misrepresentation and defective design. The legal challenge was started by California law firm Kershaw, Cutter and Ratinoff, who set up a website to recruit disenchanted iPhone 4 buyers for a lawsuit against Apple. Later that day, Apple issued another statement stating that it had discovered the cause of the "dramatic drop in bars".Apple explained how the formula it used to calculate the number of bars to display was "wrong". Apple promised to correct the issue and release a software update within a few weeks that would address the "mistake", which had been present since the original iPhone. The New York Times commented that "the failure to detect this longstanding problem earlier is astonishing."
Consumer Reports initially stated that the iPhone 4's signal issues are not "unique, and may not be serious" and it continued to mention that signal loss is a problem that is faced by the entire smartphone industry. It has been such a problem that Apple made a formal apology. The next day, Consumer Reports altered their stance after encountering instances of dropped calls.Consumer Reports rejected Apple's explanation after conducting tests in a controlled environment, and comparing the results against previous generations of iPhone. It sarcastically pointed out that using a piece of tape to cover the lower left antenna gap was one way to fix the problem, but recommended that consumers who "want an iPhone that works well without a masking-tape fix" purchase the iPhone 3GS instead. Consumer Reports also tested the iPhone 4 whilst it was wearing a Bumper, a frame-like cover manufactured by Apple that prevents direct contact with the antenna, reporting that it does fix the problem. CNN repeated Consumer Reports' statement that a small amount of duct tape had proven an effective fix to the iPhone 4's dropped call issue.
On 16 July 2010, at a press conference, Steve Jobs announced that Apple would provide all iPhone 4 owners with a free case to help solve the antenna issue and a refund to those users who had already purchased a Bumper. The free case offer would be valid until 30 September 2010, when Apple would reevaluate the situation.To get a free case, owners were able to apply via an app installed on the phone found in the App Store from 22 July 2010 to 30 September 2010. Jobs also announced that Apple could not produce enough Bumpers for all owners of the phone, but would source a supply and offer a range of cases. Additionally, Jobs cited figures from AppleCare which showed that only 0.55 percent of all iPhone 4 users have complained to the company about the issue, while the number of phones returned to Apple was 1.7 percent – 4.3 percentage points less than the number of iPhone 3GS models that were returned in the first month of the phone's launch.
Consumer Reports noted that the solution was not permanent, though a good first step.However, because Jobs did not specify a time line for fixing the problem, and the offering for a free bumper only being a temporary solution, PC World decided to remove the iPhone 4 from its "Top 10 Cell Phones" chart and reassign it to a pending rating.
AnandTech researched iPhone 4 antenna and identified that its outer construction provides 5–9 dB (6.9–9 times) better sensitivity comparing to common internal antenna design of iPhone 3Gs (the phone keeps working connection with signal as low as −120/121 dB comparing to usual −113/115 dB).
Despite the negative media attention regarding the antenna issues, 72% of iPhone 4 users say that they are "very satisfied" with their iPhone 4 according to an August 2010 survey by ChangeWave Research.
Camera image fault
Reports about iPhone 4 cameras being rendered useless by a peculiar fault started to show up on the Internet in September 2010. Under certain lighting conditions the back camera produces a large green 'halo' in the center of the image. This renders many of these images to be of much lower quality than what the iPhone 3GS is capable of producing under similar lighting conditions. Reports started surfacing on forums and have since been picked up by major media sources
Critical reception
Reaction to the announcement
Media reaction to Steve Jobs' announcement of the iPhone 4 was generally positive. The announcement included information that had not been covered by Gizmodo. Fox News commented that "seeing it in action is far more informative than staring at Gizmodo's photos of a busted test unit". Rhodri Marsden of The Independent said that "aside from the introduction of face-to-face video calling, it's not a staggering feature set," instead focusing on how the device is "more powerful than its predecessor, speedier, easier to use and will make previously laborious tasks seem like a cinch".
CNET reacted to the announcement by explaining how it believes that iMovie for iOS was the "most exciting part of this year's WWDC Keynote". The article noted how the iPhone 4, unlike current cameras, can record HD content and then edit it from the same device, labeling it a "true mobile editing suite".
Reviews
Reviews of the iPhone 4 have been generally favorable. Walt Mossberg of The Wall Street Journal called the device "the best device in its class". Engadget named it the "best smartphone on the market" in June 2010. CNET gave the iPhone 4 a rating of 8.6 out of 10, one of the highest ratings it has given any smartphone.TechRadar gave the device 4.5/5 stars.Consumer Reports said the signal problem was the reason they did not rate it a "recommended" model, although the other tests ranked it highest among smart phones.
Joshua Topolsky of Engadget described the device's industrial design as being "more detailed and sophisticated" than its predecessor.
Timeline of iPhone models
Orkut
 | |
 Orkut homepage as of April 2011 | |
| URL | orkut.com |
|---|---|
| Commercial? | Yes |
| Type of site | Social network service |
| Registration | Required |
| Available language(s) | Multilingual (48) |
| Owner | Google Inc. |
| Created by | Orkut Büyükkökten |
| Launched | 4 february |
| Alexa rank |  93 (May 2011) |
Orkut is a social networking website that is owned and operated by Google Inc. The service is designed to help users meet new friends and maintain existing relationships. The website is named after its creator, Google employee Orkut Büyükkökten. Although Orkut is less popular in the United States than competitors Facebook and MySpace, it is one of the most visited websites in India and Brazil. As of April 2010, 48.0% of Orkut's users are from Brazil, followed by India with 39.2% and United States with 2.2%.
Originally hosted in California, in August 2008 Google announced that Orkut would be fully managed and operated in Brazil, by Google Brazil, in the city of Belo Horizonte. This was decided due to the large Brazilian user base and growth of legal issues.
As of March 2011, Alexa traffic ranked Orkut 102nd in the world; the website currently has more than 100 million active users worldwide. Anyone 18 years old or older can join Orkut
History of Orkut
In 2003, Google offered to purchase the social network Friendster, but the offer was declined by that company. Google then internally commissioned Orkut Büyükkökten to work on a competing independent project. The result was Orkut. The product launched on January 24, 2002. The community membership was originally by invitation only. Orkut's explanation for invitation"Orkut is unique and fun, because it's an organically growing network of trusted friends. That way we will all have at least one person to vouch for them. If you know someone who is a member of Orkut, that person can invite you to join as well. If you don't know an Orkut member, wait a bit and most likely you soon will. We look forward to having you as part of the Orkut community."During the first year, the United States had the largest user base. By word of mouth various Brazilians began adopting and inviting more friends, in a viral process driven by the blogosphere. Soon after, Brazil surpassed the U.S. in the number of users and Orkut started becoming heavily popular in Brazil. Americans then started leaving the service and switching to other similar sites such as MySpace and Friendster. This phenomenon was covered by the English blogosphere with some criticism towards Brazilians because they tended to communicate (not only among themselves) using their native language, Portuguese, and not English.
From that time, Orkut growth was driven by Brazilian users, first being opened to everyone by register and becoming one of the most popular websites in Brazil.The creator Orkut Büyükkökten visited Brazil in 2007,in an attempt to understand the success in that country. In 2007 Orkut began attracting a large number of Indians who were seemingly not intimidated by the number of Brazilians on the site. Orkut also has a simplified site for mobile users. "m.Orkut.com". In 2008, a new feature was introduced for users having slow internet connections to access Orkut using the "View Orkut in lighter version" setting.
Over the years, Orkut has also found great popularity in Estonia as witnessed by a survey conducted by the independent research center GfK Custom Research Baltic which showed how Orkut is the most used social network platform in that country.
Features
Themes
A new feature in Orkut is Changing Themes. Users can change their interface from a wide range of colorful themes in library. Themes are currently only available in India, Brazil and Pakistan.Other miscellaneous features
Each member can become a fan of any of the friends in their list and can also evaluate whether their friend is "Trustworthy", "Cool", "Sexy" on a scale of 1 to 3 (marked by icons) and this is aggregated in terms of a percentage. Unlike Facebook, where a member can view profile details of people only on their network, Orkut allows anyone to visit anyone's profile, unless a potential visitor is on your "Ignore List" (this feature has been recently changed so that users can choose between showing their profile to all networks or specified ones). Importantly, each member can also customize their profile preferences and can restrict information that appear on their profile from their friends and/or others (not on the friends list). Another feature is that any member can add any other member on Orkut to his/her "Crush List" and both of them will be informed only when both parties have added each other to their "Crush List".When a user logs in, they see the people in their friends list in the order of their logging in to the site, the first person being the latest one to do so. Orkut's competitors are other social networking sites including MySpace and Facebook. Ning is a more direct competitor, as they allow creation of social networks which are similar to Orkut's communities.
Redesigns
First redesign
On August 25, 2007, Orkut announced a redesign. The new UI contains round corners and soft colors including small logotype at upper left corner. The redesign has been announced on the official Orkut Blog. By August 30, 2007, most users on Orkut could see changes on their profile pages as per the new redesign. On August 31, 2007, Orkut announced its new features including improvements to the way you view your friends, 9 rather than 8 of your friends displayed on your homepage and profile page and basic links to your friends' content right under their profile picture as you browse through their different pages. It also announced the initial release of Orkut in 6 new languages:: Hindi, Bengali, Marathi, Tamil, Kannada and Telugu. Profile editing can take place by clicking the settings button under the user profile photo (or alternatively, clicking the blue settings link at the top of any page).On September 4, 2007, Orkut announced another new feature. user would be able to see an "Updates from your friends" box on the homepage, where it's possible to get real-time updates when friends make changes to their profiles, photos and videos. Moreover, in case someone wants to keep some things on their profile private, Orkut has added an easy opt-out button on the settings page. Scraps were also HTML-enabled letting users post videos or pictures. On November 8, 2007, Orkut greeted its Indian users Happy Diwali by allowing them to change their Orkut look to a Diwali-flavored reddish theme. On April Fools' Day 2008, Orkut temporarily changed its name on its webpage to yogurt, apparently as a prank. On June 2, 2008, Orkut has launched its theming engine with a small set of default themes.[16] Photo tagging also was available.
On October 27, 2009, Orkut released their 2nd redesigned version.[17] It was available to very few users at first (the chosen ones as they called[18]). These users were able to send invites to their Orkut friends to join this new version. The new version uses Google Web Toolkit (GWT) and thus makes extensive use of AJAX in the user interface. However, the users of the new version of Orkut can switch back to the older version by clicking the "Older Version" link near the top right corner of the page. Features
Google stated the new Orkut is faster, simpler and more customizable. More particular features includes video chat, promotions and easy navigation. Design
The look is completely new, leaving all traces of past designs. User interface and workflow are also drastically changed. As part of "more customizable", Orkut added many different colours for your profile. The Themes were removed and an orkut badge is visible for those who haven't changed to the new orkut. The new logo also has the word "My" in it, as in My Orkut. Mouse over to logo scrolls out list of 4 most frequently used links. Vertical scroll bars have been added in the friend and community list in the home page to allow viewing all friends/communities from the home page itself. In the home page, the recent visitor's list now displays six most recent visitor's profile image as small clickable icons. Hovering the mouse over these pictures display the visitor's profile name as a tooltip.
Orkut allows users to sign in with their Google Mail, or Gmail, credentials. As described on http://orkutlogin.me, to login to Orkut always type the URL http://www.orkut.com/ instead of clicking any links to open it. This is the safest way to open Orkut.
International
Orkut is available in 48 languages and has been localized for many countries.Languages
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Controversy
Fake profiles
As with any online social networking community, a number of fake and cloned profiles exist on Orkut. Due to the large number of users and the deactivation of the jail system, the profiles were often left unremoved or, when removed, recreated easily. These profiles are normally created to have fun with other fakes and creating "Fake Families" and sometimes for trolling or spamming.Invisible profiles
In 2005, invisible profiles, communities and topics started to appear in Orkut. This could be achieved by using HTML escaping codes and 1x1 pixel photos to fool the engine behind the site.This hole was later fixed, and currently there is a lower limit on profile image dimensions.It is still possible to create invisible topics in communities.
Flooders
In August 2005 a freeware program was made in Delphi called Floodtudo ("tudo" in Portuguese means "everything". This was developed by a Brazilian) specifically for flooding Orkut. It quickly spread through the users and was easily downloadable. The most common Floodtudo versions were 1.2, 1.5, 2.0 and 2.2. As this program was massively used by thousands of spammers, a big spam wave struck Orkut in September and October 2005.During 2007–2008, Another most commonly used Scrap Flooder "Carbon Copy Scraper" & "Blind Carbon Copy Scraper" (commonly called CCS & BCCS) was javascript based (popular versions 2.4, 3.3, and 5.1), available on almost every famous Orkut community. The main idea behind this was to let profile holders send the same scrap to all their friends at a once, but it was misused by spammers.
As the flooding of Orkut came out of control, the developers implemented features to stop it by
- not allowing 2 or more verbatim topics or scrapbook entries to be submitted
- forcing the user to wait before posting another topic or scrapbook entry
- requiring captchas, whenever a scrap entry is hyperlinked.
Electronic spam
Recently, Orkut implemented an automated system to prevent spam. Orkut users can't send too many friend requests or scraps within a short time interval. If anyone does so, the user will temporarily be disabled from that feature for 24 hours to 1 week, depending on the users activity.The Frandshippers
Between 2006 and 2007, Orkut was troubled with stalkers which were called "frandshippers", these were mostly male users looking for female friends who would often keep trying to convince people to accept their friend requests, eventually fake profiles of frandshippers were made to annoy people on purpose, some even to humour themHate groups
There has recently been controversy revolving around the use of Orkut by various hate groups. Several hate communities focusing on racism, Nazism and white supremacy have been deleted due to guideline violation.In 2005, various cases of racism were brought to police attention and reported on in the Brazilian media.In 2006, a judicial measure was opened by the Brazil federal justice denouncing a 20-year-old student accused of racism against those of Black African ancestry and spreading defamatory content on Orkut.Brazilian Federal Justice subpoenaed Google on March 2006 to explain the crimes that had occurred in Orkut.
Anti-national, and anti-ethnic hate groups have also been spotted. Recently an Indian court has issued notices to Google on some of the groups. The Mumbai Police are seeking a ban on Orkut post objections raised by political groups. Groups denigrating various political leaders and celebrities have also emerged. Also in a reported case of 2005, racist groups have been reported. They were anti-Tamil groups.
Orkut has a Report Abuse feature available for all communities. Orkut communities can be reported if they contain hate/violence content. Any Orkut user (even those who are not the members of such a community) can report the abuse. The reasons for reporting abuse can be nudity or sexual content, theft of identity or personal information, child abuse, promoting illegal activities, any kind of personal attacks against any individual and a few others.
State censorship
In Iran
Orkut was very popular in Iran, but the website is now blocked by the government. According to official reports, this is due to national security issues, and Islamic ethical issues about dating and match-making. To get around this block, sites such as Orkutproxy.com (now defunct) were made for Iranian users. Other websites such as Yahoo! Groups and Google Groups have communities dedicated to receiving updates on the newest location of Iran's Orkut proxy. At one time it was possible to bypass governmental blockage of Orkut, but the site has closed its HTTPS pages on all anonymous proxies. Now it is almost impossible for ordinary users to visit this site inside Iran.Many other sites have been published in Iran since Orkut's blockage, using the same social-networking model – examples include MyPardis, Cloob and Bahaneh.
In the United Arab Emirates
In August 2006, the United Arab Emirates followed the footsteps of Iran in blocking the site. This block was subsequently removed in October 2006. On July 3, 2007, Gulf News revisited the issue, publishing complaints from members of the public against Orkut communities like "Dubai Sex", and officially bringing the complaints to the attention of the state telecom monopoly Etisalat. By July 4, 2007, Etisalat had placed a renewed ban on the site,which remains in effect despite Google's promise to negotiate the ban with the UAE.In Saudi Arabia
Saudi Arabia is another country that has blocked access to Orkut, while Bahrain's information ministry is also under pressure to follow suit.Privacy
Earlier in Orkut it was possible for anybody to view anyone's pictures, videos as well as scraps, but people started misusing the photos and videos and placing them on the Internet with fake details. Many of them were vulgar, especially pictures of women. Moreover, the scraps could be easily read.Currently privacy covers such features as scraps (separate read and write access), videos, photo albums, testimonials, and applications.
In December 2008,2009 Orkut developers introduced another privacy update that allow users to restrict viewing of their albums to certain number of friends, as well as selected e-mail contacts. The user can limit visibility of her/his profile to a certain region or group of regions (known as a "network"); in this case outside of these regions no user information is available.
Security and safety
In December 2007, hundreds of thousands of users accounts were affected, using XSS vulnerability and a worm. A user's account was affected when the user simply read a particular scrap containing an embed which caused the user to automatically become a part of a community on the site, without approval. The affected user's account was then used to send this scrap to everyone present in the user's friend list thereby creating a sort of a huge wave.MW.Orc worm
On June 19, 2006 FaceTime Security Labs' security researchers Christopher Boyd and Wayne Porter discovered a worm, dubbed MW.Orc.The worm steals users' banking details, usernames and passwords by propagating through Orkut. The attack was triggered as users launched an executable file disguised as a JPEG file. The initial executable file that causes the infection installs two additional files on the user's computer. These files then e-mail banking details and passwords to the worm's anonymous creator when infected users click on the "My Computer" icon. The infection spreads automatically by posting a URL in another user's Orkut Scrapbook, a guestbook where visitors can leave comments visible on the user's page. This link lures visitors with a message in Portuguese, falsely claiming to offer additional photos. The message text that carries an infection link can vary from case to case. In addition to stealing personal information, the malware can also enable a remote user to control the PC and make it part of a botnet, a network of infected PCs. The botnet in this case uses an infected PC's bandwidth to distribute large, pirated movie files, potentially slowing down an end-user's connection speed.The initial executable file (Minhasfotos.exe) creates two additional files when activated, winlogon_.jpg and wzip32.exe (located in the System32 Folder). When the user clicks the "My Computer" icon, a mail is sent containing their personal data. In addition, they may be added to an XDCC Botnet (used for file sharing), and the infection link may be sent to other users that they know in the Orkut network. The infection can be spread manually, but also has the ability to send "back dated" infection links to people in the "friends list" of the infected user. According to statements made by Google, as noted in Facetime's Greynets Blog, the company had implemented a temporary fix for the dangerous worm.
HTTPS Not Obvious
In and around April 17, 2007 users began reporting that secure (https) access to the Orkut login server was no longer available. In fact, Google had changed the main login page to http delivery to improve efficiency, but the actual login remained secure using https in an iframe. This information had not been well-published by Google, and did not give the users the reassurance of seeing the "secure connection" padlock in the browser. On July 17, 2007, a revised login page, which is delivered via https, addressed these issues.Session Management and Authentication
On June 22, 2007 Susam Pal and Vipul Agarwal published a security advisory on Orkut vulnerabilities related to authentication issues.The vulnerabilities are considered very dangerous in cybercafes, or in the case of man-in-the-middle attack as they can lead to session hijacking and misuse of legitimate accounts.The vulnerabilities are not known to be fixed yet and therefore pose threat to the Orkut users.A week later, on June 29, 2007 Susam Pal published another security advisory which described how the Orkut authentication issue can be exploited to hijack Google and Gmail sessions and misuse the compromised account of a legitimate user under certain conditions.
Joseph Hick performed an experiment on the basis of the advisories published by Susam Pal, to find out how long a session remains alive even after a user logs out. His experiment confirmed that the sessions remain alive for 14 days after the user has logged out. It implies that a hijacked session can be used for 14 days by the hijacker because logging out does not kill the session.
W32/KutWormer
On December 19, 2007, a worm written in Javascript started to cause havoc. Created by a Brazilian user called "Rodrigo Lacerda", it automatically made the user join the virus related community and infect all friends' scrapbooks with copies of itself, the worm infected over 700,000 Orkut users. The worm is spreading through Orkut’s recently introduced tool that allows users to write messages that contain HTML code. The ability to add Flash/Javascript content to Orkut scraps was only recently introduced.W32/Scrapkut worm
On March 3, 2008 W32/Scrapkut.worm was found. The worm attempts to spread itself by sending Orkut users scraps that contains the link to the worm itself. Aliases are Downloader.Banload.ONK (GRISoft)- TR/Dldr.Orkut.A (Avira)
- Trojan-Downloader.Win32.Banload.auf (IKARUS)
- Trojan.DL.Win32.Banload.dzm (Rising)
- W32.Scrapkut (Symantec)
Bom sabado Worm
On September 25, 2010 Bom sabado worm was found. The word "Bom sabado" is a portmanteau of "Bom sábado", which means "Good Saturday" in Portuguese. This worm attempts to spread itself by sending scraps and adding users to a Bomsabado group on Orkut.Other attacks
Private album crack
In December 2007, a Brazilian cracker named "Rodrigo Lacerda" published a script that allowed users to scrape other people's private photos. The exploit consisted of generating album photo urls, due to their simple structure.This crack made Orkut team implement new secure album/photos implementation
Legal issues
India
On October 10, 2010 Manager, Manu Rekhi, on the Orkut internal blog. There has also been some media outcry against Orkut after a couple of youngsters were apparently lured by fake profiles on the site and later murdered.On November 24, Bombay High Court asked the state government to file its reply in connection with a petition demanding a ban on social networking site, Orkut, for hosting an anti-Shivaji Web community.
Recently, the Pune rural police cracked a rave party filled with narcotics.The accused have been charged under anti-narcotic laws, the (Indian) Narcotic Drugs and Psychotropics Substances Act, 1985 (NDPS). Besides the NDPS, according to some media reports, the police were deliberating on the issue of charging the accused under the (Indian) Information Technology Act, 2000 perhaps because Orkut was believed to be a mode of communication for these kind of drug abuses.
The Cyber police in India have entered into an agreement with Orkut to have a facility to catch and prosecute those misusing Orkut since complaints are rising.
Brazil
On August 22, 2006, Brazilian Federal Judge José Marcos Lunardelli ordered Google to release by September 28 Orkut user’s information of a list of about two dozen Brazilian nationals, believed to be using Orkut to sell drugs and to be involved in child pornography. The judge ordered Google to pay $23,000 per day in fines until the information is turned over to the Brazilian government. According to the Brazilian government, the information would also be used to identify individuals who are spreading child pornography, and hate speech. As of September 27, 2006 Google has stated that it will not release the information, on the grounds that the requested information is on Google servers in the U.S. and not Google servers in Brazil, and is therefore not subject to Brazilian laws.
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