I'm a Social Scientist, so the concept of "community" is something I study both on and off Playa.
If you'd like to just open the floor to a discussion, let's go!
Prior to being on the playa, it is simply impossible to fully grasp the communal glue that binds Burners together. Be it the Participants Only clause, the opportunity to show off one's freakish artistic talents w/o repercussions, the insane environmental conditions, the conspicuous lack of commercialism, or the "let's all be freaks together and enjoy it" festival atmosphere. The Participation factor is the biggest IMO.
There is a difference between community and family IMO, where in a community, there is a sense of duty, but with it's limits. There are some in BM community that I would pick up at the airport at 3am for. Not many, but some. What I do with the Pottie Project is absolutely for the Community.