Dennis Crowley and Alex Rainert have launched Dodgeball 3.0, a social tool for New Yorkers accessible through the phone, accompanied by New York magazine coverage. Dodgeball has three core features: Guide, Circles, and Scout. The Guide is a simple ratings thing (bars, restaurants), but the interesting things are Circles and Scout, because they deal with the intersection of social life and location. Circles is "I am here. Where are you?" It gives you the mailing list pattern for location: group re-direct of of your location to people in your Circle. Scout is "What is going on near me?" It gives you the ability to shout a message to any subscriber in a 10 block radius, and to listen to other messages broadcast in that same area. As Anthony Townsend says, cities are in part information processing machines; Dodgeball is an attempt to make social information easier to process in near real time.