The good news: There's finally an app for Turntable.fm. The bad news? You're probably not going to get to use it. Turntable.fm still requires you to be invited via Facebook by someone who is already using the service. This is probably a good thing from a scale point of view, but I think Turntable.fm may have worse things to worry about when it does open the floodgates.
Turntable.fm is a mix between streaming music service, chat room and ultimately, videogame. If you try to be a DJ, you'll enter a room and essentially compete against other DJs to have your playlist selections played in the room. You can, of course, simply listen and vote as a lowly listener, but for people
