I guess you are referring to http://lesswrong.com/lw/2mp/burning_man_meetup_bayes_camp/ . Can somebody tell whether that was successfulk in this sense?

I was actually talking about Burning Man as a broader social phenomenon. As it happens, though, I did attend Bayes Camp in 2011 and 2012, and I'm pretty happy with it in this context; I'm still in touch with many of the people I met through it, and I think the difficulty and expense of helping set up a camp was a strong contributor to that bond.

Incidentally, there seems to be something similar going on among CFAR alumni; but as I don't belong to that group I can't comment too authoritatively on it.