A Pittsburgh-area man who was robbed over the weekend used MobileMe’s Find My iPhone feature to help police track down the robbers and his stolen goods. The Pittsburgh Post-Gazette reports that the man was robbed by two other men of his iPhone, wallet, and PIN numbers for his credit cards early Sunday morning; the man later used Find My iPhone to track the robbers to a nearby Wal-Mart where police said the suspects purchased goods using a stolen…