Grooveshark looks nice! Pandora's been recycling the same songs too much for my tastes lately, and I'm getting bored with it. I also wish I could easily access the "station logs" later.

I like the fair use policy on the copyrights page a lot.

Are you really going to be able to let users drive to the exact song they want to hear, even after critical mass builds up? Seems too good to be true. I always assumed that was how Pandora managed to keep the heat off (by not letting users pick the exact song when they want to hear it).