Open WiFi Access Point BCP's???

[Deepak Jain <deepak () ai net>]

Anyone have any recommendations for  BCPs or software suggestions on 
running an open community-based access point (or network)?

Think: an urban area where potentially lots of people could be popping 
on and off with little authentication. These seem to be pretty prevalent 
around Panera's and other things -- I just don't know what they are 
doing to manage (rather that prevent) P2P and Spam, etc uses.

Pointers very appreciated!!

Thanks,

DJ