Last night, part 1 of NBC's "To Catch An Identity Thief" aired:
http://www.msnbc.msn.com/id/17805134/
where folks were bamboozled into doing "package forwarding" for others outside the USA (who had bought the items with stolen credit cards). Not sure what the original poster needs a US address for, and not accusing him of anything, but one should do proper due diligence in these kinds of matters, and be careful.