It occurred to me that I have yet to hear a woman brag about getting a badge from Foursquare, and that I never will. In fact, come to think of it, I barely hear women mention such services at all. Over the following weeks I kept a sharp eye (and ear) out, and only found one friend—tech-savvy and typically an early adopter of all manner of gadgetry—who described herself as a Foursquare fan. Just the other day, she said, she had been sitting by herself eating a lonely crepe. Killing time, she checked in to the restaurant and, as luck would have it, a friend who was in the neighborhood dropped by.