I like the notion of a happy family of strangers, but it doesn't
  seem the least bit possible:

  Examples:
  a) School
  b) Work
  c) Organizations

  They work in subcultures, like Second Life, because they're in a
  mutually agreed system.

  Unless you can get people to start thinking systemically about
  the planet, I don't see how the happy stranger theory would
  work, even though I find it quite tempting. The fact that what
  we do online is virtual, is precisely what makes it different
  and what makes it work:

  It's not real life