A Chicago thief and his accomplice may regret stealing an iPhone during a series of home invasions. In one robbery, the suspect took an iPhone after he pistol-whipped a woman and two men and then forced them into a bathroom. The suspect was apprehended after police used a GPS app to locate the stolen phone. The report doesn't mention what GPS app they used, but it's likely Find my iPhone or a third-party competitor.
Apple hasn't released any stats on the number of people using the Find My iPhone service, nor how many devices have been recovered thanks to its presence. Judging from the news reports and the tips we receive, the list of recovered devices is probably long. I've enabled Find My iPhone and Find My Mac on all my Apple products just in case I ever need it, have you?