GIGAOM — Foursquare is looking beyond virtual badges to high-profile content brands to give it a leg up on competitors such as Gowalla and Yelp. The company said today it’s inked a deal with Zagat to enable users to access restaurant reviews and recommendations, according to the New York Times. And AdAge reports it’s in the process of deploying promotional campaigns for HBO and Warner Brothers. The moves follow its recent tie-up with Bravo Media as well as a deal with the Canadian version of Metro that will provide users with local news content as they check in. The strategy appears to be about making Foursquare fun AND functional...