The good thing about the iTunes Radio or iRadio or whatever they call it, is that it won't (hopefully) be limited to the US. Pandora (and a bunch of others) are not available in Canada (thank you CRTC) and it is a pain as we have a lot of snowbirds who use these features when in the US but come home and can't use any of them. Thankfully I have found a way (assuming legal) to gain access to Pandora, Hulu Plus, and a few others in Canada.

I am hoping iRadio is designed like Pandora and plays some upcoming bands/artists and not just the mainstream that terrestrial radio is playing.