It’s no secret Facebook can be a successful way to reach your customers and engage them on a personal level. But Facebook is not finished growing. Recently, the social-media leader came out with an opportunity called Facebook Deals. This service enables marketers to reward Facebook users who use Facebook Places—an application that allows members to alert friends as to where they are—and “check in” at a restaurant or retail location from their mobile phones. The businesses can then offer deals and discounts to thank them for visiting the establishment. According to a recent National Restaurant News article, more than 3 million people are already checking in with Places and about one-third of Facebook’s users use the mobile app. Among some of the businesses to sign up for Facebook Deals are McDonald’s, Chipotle and Starbucks. And you know, if the big guys are taking advantage of the opportunity, then there’s probably something to it.