ok I don't know who else knows about this but I've recently re-discovered it. www.launch.com You can research just about any artist ever and make your own radiostation to listen to online. It kicks SO much ass.

it starts to really learn what you like too. like I have tons of classic rock and techno and stuff but right now it KNEW to play shaft... just because that song rules. It knows my favorite bands are Radiohead, Bush, The Beatles, etc. but still knows to broaden my pallett (however you spell that).... unfortunately sometimes the new shit it gives me sucks ass and I have to vote 0 on that shit.

anyway it's launch.com if you guys are interested. My profile is phatmatt_jonny IF you want to listen to my radiostation.