Girls Around Me

http://www.cultofmac.com/157641/this-creepy-app-isnt-just-stalking-women-without-their-knowledge-its-a-wake-up-call-about-facebook-privacy/

This application apparently doesn't violate any terms of use for any of the 3 APIs (Application Programming Interface) it uses – Facebook, Google Maps and Foursquare. Brilliant Russians.