dodgeball.com :: location-based social software for mobile devices. Basically, you get yourself and a bunch of people you know to sign up with their cellphones and then, when you're somewhere and you want others in your clicque to know where you are, you sms to an address @dodgeball.com and it will broadcast to everyone in your network. One handy feature I'm sure I'll use: sms a location (eg: Bar Divine?) and it will reply back with the address and cross street of the location.