I've had a search but couldn't find what I was looking for - sorry! I am considering JBing my iPhone purely to use Grooveshark, however I quite like the ease of backup with iTunes. If I do Jailbreak and install Cydia, then get the Grooveshark app - what happens if I backup via iTunes? I'm expecting either it wont work at all or that it will only backup the non-Jailbroken apps and settings? Last.fm are going to start charging £3 a month to use it on the iPhone - Groove shark may be a better option for $3! Either that or pay £10 a month for Spotify on a non Jailbroken iphone.