Thus the core of the problem: if you don't "get" Facebook/Twitter, it doesn't help to read about other people who do.

The article explains how it works -- ambient awareness and all that -- but it doesn't explain why I'd want that, if I'm not one who already "gets it". Why do I want 1000 asymmetric "weak ties"?

I have noticed that the people who use twit/book the most are those with cell phones. If you don't have a Blackberry welded to your hip, tweeting "I'm making a sandwich" has way too much overhead.