World Tracker turns anyone into a cellphone spy

Forget those piddly wiretaps. The next frontier in warrant-free surveillance is upon us, and it's open to everyone. A UK service called World Tracker apparently uses cell tower data (or GPS, when available) to track the location of just about any GSM cellphone. More:http://www.engadget.com/2006/01/20/world-tracker-turns-anyone-into-a-cellphone-spy/