by: Christopher Heine | AdWeek

Lifestyle magazine Urbanite and public radio station WTMD, each local entities in Baltimore, say Foursquare helps sell traditional advertising. The media brands have teamed up to create a contest-based geosocial game dubbed "The Great Baltimore Check-In," which they are packaging with print ads, website promotions and radio plugs. It's an unusual marriage of mobile check-ins and offline ad units.