Wow, seriously if you haven't checked out this app yet go download it now. I've never really used LastFM for listening to different artists while on my computer cause what's the point I have my entire iTunes library... but I just installed this app and I know I'll be using it more than any other. Unfortunately I'm in Canada and don't have unlimited data so I have to watch my usage when I'm mobile, but I'm listening to a station right now at work and it's great. It also gives a bio about the group that's playing, a list of similar artists, a list of upcoming concerts, and lets you buy the song on the iTunes music store... seriously impressive. Not sure if there was another thread on this but had to point out my love first hand haha