It’s a Deal: $25 Credit for Spending $25 with Your Amex Card

American Express is sponsoring a pretty amazing incentive to get consumers to shop at small businesses this holiday season: When you sign up at the link above, you’ll get a $25 credit on your Amex card if you spend at least $25 at nearly any independently owned business—that accepts American Express, of course. The offer is valid for purchases made through December 31, 2010, though enrollment is limited to 300,000 customers.