Rumors were circulating that Apple will make MobileMe a completely free service, but it looks like we’re taking baby steps instead: Find My iPhone/iPad is now free for iPhone 4, the iPad, and the fourth-gen iPod touch running iOS 4.2.1. As with the paid feature, you’ll be able to locate your device on a map, lock it, display a message, play a sound, or remotely wipe your data from any browser or the updated iOS app. Only issue is its only on these Newer Devices, So you either have to step into this Generation of devices, or Don’t Worry about it since you did’nt have it anyway!
