The Facebook tool which turns your mobile into a snoop

The Social Network Integrated Friend Finder (Sniff) is a new application, accessed via Facebook or mobile phone, . . .

Useful Networks, the American company behind Sniff, promised that only consumers who gave their permission could be electronically tracked by the service, which operates across all mobile carriers. Users can specify who can and can not sniff them, or whether they are open to be sniffed by anyone on the network.