The YouTube is an American video-sharing website headquartered in San Bruno, California. The service was created by three former PayPal employees Steve Chen, Chad Hurley, and Jawed Karim in February 2005. The media corporations such as BBC, Vevo, CBS, and Hulu offers some of their materials via YouTube as a part of the YouTube partnership program but most of the contents are uploaded by the individuals. The unregistered users can only watch videos on the site but the registered users are permitted to upload an unlimited number of videos and add comments to videos. The videos deemed potentially offensive are available only to registered users affirming themselves to be at least 18 years old.