Foursquare is giving away a free $25 credit to American Express cardholders through a new promotion taking place on November 26th, aka “Small Business Saturday.” (Yes, everyone has their own Black Friday spinoff now). To get the credit, Foursquare users have to spend $25 at a local merchant and check-in using the mobile app.

There are “hundreds of thousands” of participating merchants across the U.S., according to the map in the Foursquare blog post.

To claim the deal, American Express users will first need to sync their account with Foursquare at sync.americanexpress.com/foursquare. Afterwards, the available merchants will appear in the “Explore” tab in the Foursquare app and on the Foursquare homepage, starting on Saturday the 26th.

In order to claim the credit, after setup, users will need tap the new “load to card” button that appears upon check-in. To save some hassle, you may want wait to check in until after you know you plan to spend the $25.00 at the merchant. Update: Foursquare says you *have to* check in on Foursquare prior to checkout. You know, just to make things harder, I guess.

The credit will show up on your next Amex statement, five business days after your purchase.

Foursquare isn’t the only social media service American Express has tapped in promotion of this Small Business Saturday thing which it created via its American Express OPEN group. The company recently appeared as a Klout perk too. If you’re not into Foursquare and Klout, there’s also a Facebook page where you can find businesses and claim your credit.

Crunchbase

• FOURSQUARE

Company: Foursquare

Website: foursquare.com

Launch Date: March 11, 2009

Funding: $71.4M

Foursquare is a geographical location based social network that incorporates gaming elements. Users share their location with friends by “checking in” via a smartphone app or by text message. Points are awarded for checking in at various venues. Users can connect their Foursquare accounts to their Twitter and Facebook accounts, which can update when a check in is registered. By checking in a certain number of times, or in different locations, users can collect virtual badges. In addition, users...

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