THR's 2010 Digital Power 50

Foursquare’s growth is attracting both Madison Avenue and Hollywood to the location-based social networking startup. The New York-centered, 16-employee company counts partnerships with HBO, Warner Bros., MTV, VH1, History Channel, Bravo and other networks. Foursquare users can unlock prizes and info from network colleagues like tips from “Top Chef” participants on hot new restaurants. Walker services all these partners while still studying for his MBA at Stanford. The company expects to make money via licensing deals and leveraging its user habits data. “Once you layer location onto things, there are so many interesting uses for brands, celebrities, networks, politicians,” he says.