Taco Bell, Dunkin’ Donuts, Quiznos, and Red Robin want to see if consumers’ love of social gaming can be converted into commerce at their stores nationwide.They’ve penned deals with Plink, a loyalty marketing start-up that’s set to announce its quick-serve brand test partners on Thursday. It’s pretty simple: the more Plink users spend at the restaurants, the more Facebook Credits they’ll earn to play games like FarmVille, CityVille, and The Sims.

via Facebook-Based Loyalty Program to be Tested by Major Chains.