Google music. Who cares? Oh right, you guys don't have Spotify. I don't know anyone that has it that bothers with iTunes or actually buying music anymore. Get the free version, and get any music anytime and the occasional ad. Pay a few bucks a month, and you get any music anytime with no ads.
Spotify is great as long as you don't step out of the narrow scope of the music offered. Try finding anything released <6 months ago and report back. rdio and MOG are even worse in that respect. Grooveshark is the only service that has a decent though a Kazaa-like chaotic catalogue.
Personally, I ignored a bunch of artist just because they don't have their music in Spotify; "you want me to listen to your music? let me do that the way I want, otherwise go screw yourself" type of thing.