Today any local U.S. business can start using Facebook's Offers product -- free-to-create coupons that businesses can share to the news feed, and that users can bring to brick-and-mortar stores for redemptions. First announced in February at the Facebook Marketing Conference, the product has been in private testing with a select group of brands who worked with Facebook reps to run the offers. Now the promotional product is available in a self-serve interface.While it doesn't cost businesses anything to run offers, Facebook could still make money on them. If they perform well in the news feed and drive business to physical stores, those stores may spend more on Facebook ads that increase their Page fan counts -- and the subscriber bases for the coupons. read more..