I've often wondered about the funny paradox of Connectedness---one person's virtually uninterrupted monologue about organizational dynamics. There are many blogs with multiple authors and I could configure Connectedness that way too. That's small potatoes, however, compared to the world of MetaFilter.
MetaFilter describes itself: "MetaFilter is a weblog that anyone can contribute a link or a comment to. A typical weblog is one person posting their thoughts on the unique things they find on the web. This website exists to break down the barriers between people, to extend a weblog beyond just one person, and to foster discussion among its members."
I learned about MetaFilter today because one of its members posted a link to Connectedness while commenting on this interview about collaborative innovation in business. And suddenly the hits are coming. I guess MetaFilter is popular (or "more addictive than crack," as it bills itself).