Last.fm is a music website, founded in the United Kingdom in 2002. Using a music recommender system called “Audioscrobbler”, Last.fm builds a detailed profile of each user’s musical taste by recording details of the tracks the user listens to, either from Internet radio stations, or the user’s computer or many portable music devices. This information is transferred (“scrobbled”) to Last.fm’s database either via the music player itself (Rdio, Spotify, Clementine, Amarok) or via a plugin installed into the user’s music player. The data are then displayed on the user’s profile page and also compiled to create reference pages for individual artists. By April 2011, Last.fm had reported more than 50 billion scrobbles. It claimed 30 million active users in March 2009, and on 30 May 2007 it was acquired by CBS Interactive for UK£140 million (US$280 million). Wikipedia

URL: http://www.last.fm