YouTube is a video-sharing website headquartered in San Bruno, California. Three former PayPal employees, Chad Hurley, Steve Chen, and Jawed Karim, created the service in 2005. Google bought the site in November 2006 for $1.65 billion.
The site enables users to upload, view, rate, comment, and share videos, as well as subscribing to other users, businesses, or playlists. It offers a wide variety of user-generated and corporate media videos available as video clips, TV show clips and full shows, music videos, short and documentary films, audio recordings, movie trailers, live streams, and other content such as video blogging, short original videos, and educational videos. Most of the content on YouTube is uploaded by individuals, but media corporations including CBS, the BBC, Vevo, and Hulu have featured material on YouTube.
YouTube and selected creators earn advertising revenue from Google AdSense, a program which targets ads according to site content and audience. The vast majority of its videos are free to view, but there are exceptions, including subscription-based premium channels, film rentals, as well as YouTube Music and YouTube Premium, subscription services respectively offering premium and ad-free music streaming, and ad-free access to all content, including exclusive content commissioned from notable personalities. As of February 2017, there were more than 400 hours of content uploaded to YouTube each minute, and one billion hours of content being watched on YouTube every day.
As of 2018, the website is ranked as the second-most popular site in the world.