With Foursquare’s founder, life is a virtual game (John D. Sutter/CNN)
John D. Sutter / CNN:
With Foursquare’s founder, life is a virtual game — New York (CNN) — Dennis Crowley was jogging across a New York bridge when he spotted something exciting: a cartoon mushroom, spray-painted on the sidewalk. — It looked like something out of Nintendo’s “Super Mario Bros.,” which Crowley grew up playing.