Thank you for your thought-provoking blog post. I think wide-scale group experimentation and play is slowly becoming much more incorporated into our daily lives and I'd love to see that process speed up.
Organizations like Groupon, LivingSocial, Airbnb, Kickstarter and (around where I live) The Boston Society of Spontaneity are all encouraging people to get out and make more random, meaningful connections. I look forward to the day when these organizations, ideas like thepoint.com, and the concept of something like a "sanctuary city" [1] are more commonplace and acceptable.
[1] http://en.wikipedia.org/wiki/Sanctuary_city