So I sold my 3G to a coworker today, and he went home to jailbreak it and activate it on his wireless carrier. Not sure if he's on AT&T or not. Anyway, that's not the point. I had the phone erase all content and reset the settings, took the sim card out, and he took it home. There was nothing on it. I checked. No apps, no photos, no contacts, no nothing. He did the restore through iTunes, jailbroke it, and then downloaded some apps. When he opened up ESPN, the page came up with what were my favorite teams. How come the app remembered my favorite teams even after everything had been erased and restored? Should I be worried that he could come across any sensitive information that apps might somehow remember?