Dodgeball
Only works in the US at the moment. But it seems you message in your name and location, and Dodgeball tells you who is nearby. If you message in a 'crush', youll be told when the love of your life is near by. This doesn't seem to be GPS/location based services. More like Twitter for dating? Or Groovr shoutouts for bumping into friends?
Groovr community - send shout outs (status), videos, fotos
groovr is the key to your mobile life. Meet fun people in your area, find hot new places and see what your friends are doing right now! groovr allows you to locate your friends and to share photos, videos and blogs in real time so you'll always be connected. Locations: If you were at Disneyland you could send the command "@ Disneyland" to go@groovr.com and anyone of your friends would be able to view your current location. What is a Circle of Trust? Swarm down: You will only receive content and shouts from Your Circle of Trust.