Good Comment - How to Build a Social Network

Gabe Morris wrote this on my last post:

LinkedIn annoys people to the extent that it connects you without relevance. The basis for LinkedIn and Friendster’s automatic relevance is degrees of separation. But this has weaknesses – there are second degree contacts who I have very little in common with, while I am sure there are hundreds of people in the sixth degree and beyond that I would have plenty in common with.

Excellent point.  If you're going to build a relevent social network, the glue should be something more than connection itself.