Get Paid by American Express When You Use Foursquare

Foursquare and American Express supposedly inked a deal that offers discounts to Amex card holders.

Use your plastic in stores like Sports Authority and restaurants like New York's Union Square Cafe and you can get as much as $20 credited back to your Amex account. This is just an early trial and limited in scope, but the discounts are impressive. [NY Times via Business Insider]