YouTube

YouTube is a video-sharing website, created by three former PayPal employees in February 2005, on which users can upload, view and share videos.The company is based in San Bruno, California, and uses Adobe Flash Video and HTML5 technology 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 US$1.65 billion, and now operates as a subsidiary of Google.

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. This video has since been removed from YouTube.

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.

Entertainment Weekly placed YouTube on its end-of-the-decade "best-of" list, describing it as: "Providing a safe home for piano-playing cats, celeb goof-ups, and overzealous lip-synchers since 2005."

source: http://en.wikipedia.org/wiki/YouTube