Do you know anything about intentional communities?

In my ongoing spiritual search, I have learned about the existence of such places. They remind me of the many short lived hippy communes that were established when I was coming of age.

I am not sure of the exact defintion of intentional community, but I think this place would be considered one:
http://www.acorncommunity.org/

It is only a few hours drive from my home and I plan on visiting. I will let you know my impressions.