American Express Small Business Saturday is giving out $25 statement credit for spending $25 or more at participating businesses. Make sure to register your Amex card to participate and use it until December 31st 2010. One consumer Amex card per customer and is limited to the first 100,000 people.
From the website
Eligible merchants include any independently owned small businesses that accept the American Express Card. Purchases made online, at large, national chains, at franchised business locations and at government agencies are not eligible. Prepaid, corporate cards and ExpressPay transactions are not eligible. […] Limit one statement credit per Cardmember. Statement credits are generally issued within 5 business days after your qualifying purchase, but may take up to 2 billing cycles to post to your account. Additional terms apply; see Registration Terms and Conditions for details.