Pointless feature. So many good quality radio apps. So many other services like last.fm or soundcloud (or even the pay for on mobile 'spotify).
iTunes Radio - what's its USP?
I am a premium Spotify user and have been since the beginning. If iTunes Radio has a similar music catalogue it would beat out Spotify from a pricing perspective by a long shot. Will be interesting to see what types of content deals Apple closes by the release date.