Is this one per a family or something? I didn't see that on the site so I hope it is not.
edit: NM:
Special Offer is open to current American Express® Small Business Card Members who received the offer postcard from American Express on August 31, 2005 or later. Participants must be eighteen (18) years old or older, a legal resident of the fifty (50) United States (including D.C.), and must have a valid email address. Limit of one (1) $10 American Express branded reward card per natural person, per email address, per physical address. Special Offer ends 11:59 p.m. Eastern Time October 31, 2005. American Express branded reward cards will be delivered by mail 6-8 weeks from the Special Offer end date. Terms and conditions apply on voucher Sponsor: American Express Travel Related Services Company, Inc.