I'm not sure if anyone has ever seen the movie the Beach, but a good portion of the movie is placed in a commune. There is a lot of pretty interesting dynamic between the characters, and by the end it falls apart due to a power struggle. The fantasy dies as a result of greed in tough times. Same idea for hippie communes in the 70's. I thought it was interesting that this movie, which is not real, is actually a pretty good representation for what actually happens in communes of that nature- and of the handful of people I have met that have partaken in similar communes (basically very small alternative (pot loving ) mini societies) - this has always been the case.
I still want to try it though... ken kesey style.