YouTube is a website that allows registered users to share an unlimited number of videos on the internet. YouTube was the brainchild of three former PayPal employees, quickly emerged as a cultural phenomenon, and was purchased by Google for 1.65 billion dollars in 2006 . Non-registered members may view any public video uploaded to the site, while registered members may upload their own videos and make them available to the public. Because anyone may upload any non-copyrighted, non-obscene video to YouTube, the emergence of the site has encouraged a mass popularization of amateur filmmaking. Many of the most popular videos range from video blogs to sports clips to machinima. Despite YouTube's explicit policy, copyrighted work including television series, film clips, and music videos often appears without permission on the site.
Depending on the preferences of the uploader, registered users may rate and comment on most videos. Because of its level of interactivity, YouTube can be regarded as an important example of the possibilities of Web 2.0.
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 http://en.wikipedia.org/wiki/Youtube.com Viewed On 2007-5-13