Yobongo? Si.

Our thanks to Adam for this app recco. Yobongo is a location based group chat app available currently only for iOS. On the surface, it's uber-creepy. Log on and be instantly joined to 10 random strangers who just happen to close by in a group chat pod. I'm reminded of Demetri Martin's obervation concerning social networks: "Social networking sites are loaded with sexual predators; more importantly they're loaded with sexual prey." But on closer analysis, there are some pretty nifty non-stalker uses. "Can anyone reccomend a good restaurant on the lower east side?" for example (matched to a group of people who actually are in that area) would seem to have promising results. Yobongo is currently available for use in the bay area, New York and Austin. But is already planning against rapid growth. Yobongo co-founder Caleb Elston is in development on an "affinity algorithm" that will match the user with similarly minded people in the chat room. Essentially grouping you with like-minded people from the outset. No word on when/if Yobongo is headed to Android.