Last.fm

Creates radio stations based on a user’s personal tastes, using both new and established music.

Website: http://www.last.fm/

Last.fm creates radio stations based on a user’s personal tastes, using both new and established music. They tap “the wisdom of the crowds” by reviewing the music library on a user’s own computer to make personalized music recommendations. The site also connects users who share similar tastes and provides custom radio streams.