Do any of you use last.fm? I just found out about it last night, but it seems pretty neat so far.
They have plugins for various music players (iTunes, winamp, etc) and as you listen to songs, or sync up with your portable player (iPod, etc) your recent songs are uploaded to your profile. Based on your listening habits it generates "neighbors" and custom radio stations for you.
This is my page. I've only been listening for an hour or so, so I don't have enough data to generate neighbors yet. I'm always interested to see what kind of stuff other people like, so feel free to add me to friends, tell me to GFY, call me insipid, whatever.