A social network with only 10 friends?

Evan Williams, on stage at the Web 2.0 Summit talking about how constraining software services brings goodness, said he wants to know what a social network with only 10 members would be like.

Hey, social software that Scoble won’t use! Heheh, I can hear thousands of people saying “I want THAT!”

Seriously, don’t we already have this? It’s called a family. That’s one thing I can’t add more members to very quickly. 🙂