Say I've successfully set up iCloud for 3 devices: 1) iPhone 2) iPad 3) Windows 7 Laptop So now my contact list is totally the same on these 3 devices. Adding a contact on one device will automatically add that same contact to the other two devices. Deleting one contact on one device will delete that same contact on the other two devices. Sweet. Question: what happens when i do a clean format of my laptop next week? Will all 3 devices end up with no contacts or will the laptop repopulate with the full contact list? How does iCloud know which of these scenarios i want?