User-generated Google maps of police speed traps are easy to find with Trapster, a site that offers just that: a way to alert other drivers of speed traps in your area. The concept is simple: download the Trapster app for your mobile phone, and use it to report when you come across a speed trap. The report appears online for everyone to see. Trapster offers apps for cell phones using Windows Mobile, the BlackBerry, the Nokia N95 and other S60 smart phones (an iPhone 3G app is forthcoming). Of course, it’s only as accurate as your fellow drivers are, so the more people play the game, the better reported the speed traps are.