AT&T has a problem. The wireless carrier's subscriber growth is significantly slowing and its exclusive hold on the iPhone in the U.S. may come to an end in 2010.
Sure, AT&T can go back to the iPhone trough, hoping that the forthcoming iPhone 4G will prop up its sales. But that's not going to help the company as it struggles with the blessing and curse of heavy data usage the iPhone has imposed on its network.
What AT&T really needs is a software story, and Foursquare may be a good place … Read more