I have a 16gb iPhone 3G, and I'm considering jailbreaking it. Is it possible for windows yet? I read somewhere that it's OSX only currently, but elsewhere that a windows version has been released. What exactly does jailbreaking do, or allow me to do? What are its advantages? I've been looking around but I haven't found too much info on this. I'm probably not looking hard enough, though. I have some bought apps and some apps with saved data that I really don't want to lose. If I jailbreak correctly, will the apps still be usable, and will the save data remain untouched? Thanks.