I found this article via Architectures of Control from Adrian Short titled The Stepford Wives of Worcester Park which had a lot of interesting things to say about communities, curfews, and law and order. The real kicker is this paragraph:

I’ve long believed that the real cure for disorder on our streets isn’t to scour them clean of humanity, but to fill them up with people of all ages, classes and “lifestyles”, to encourage diverse activities and to promote the notion that we as citizens have equal responsibilities to be tolerable and to tolerate the reasonable behaviour of others. The notion is as old as cities themselves and defines the very essence of citizenship.

Which basically sums it up. Which then refers to the title of my own blog entry. You can't have a functioning community (a group of businesses and residences) without a community (a group of people working, interacting and living together). At the same time, an online community has similar, but different problems from a property based community. You have people interacting and possibly even working together, but they are so far removed from each other that arguments and misunderstandings run rampant. See the Internet Fuckwad Theory

The piece of social-software that can successfully solve for that would be a killer app.