I'm a current Cingular/AT&T customer, If I walk into the my friendly AT&T store with an iPhone that has already been activated, by someone else who cancelled their account, does that help me from signing a 2-year contract? I mean, the other person signed the contract on this paticular phone, and then paid the $175 cancellation fee. So why should I have to sign a 2-year contract? Has anyone done this with say, a used, already activated iPhone from eBay?. Thanks in advance!