After reading another thread, I now have a question about sharing apps: Say you share the app, Dizzy Bee, between you and your wife. Say you and your wife are at two different save points in the game, meaning different data is stored in both apps on your iPhones. What happens when you both "backup" the apps onto your computer? Are there now two backup files of the same app? Does one override the other? It seems that this could get messy.