Can you help me discover more music that I'll like?
Pandora is a great website that creates a streaming audio playlist of music based on any artist or track you suggest. Every artist, every song, every genre has some attributes that build interesting connections.
"On January 6, 2000 a group of musicians and music-loving technologists came together with the idea of creating the most comprehensive analysis of music ever. Together we set out to capture the essence of music at the most fundamental level. "
Similar services are: Yahoo! Launchcast (you can find it in Yahoo! Messenger) and Last.fm.