"I reckon lots of smart people start blogging and don't find it rewarding because they don't get into a community whose praise and criticism can make it worthwhile. That community is what those of us who want to see a more thoughtful blogosphere should all try to build."I'd agree with his conclusion, but I think that the technology isn't quite there yet to support the development. Blog-posts disappear from view shortly after they are written in most cases. They aren't captured and indexed in a consistent way, and 'backlinks' aren't sufficiently effective or consistently applied. There isn't a fully developed form of 'collaborative filtering' in place yet (though this is developing all the time in different forms).
I keep emphasising the 'yet' bit of those sentences because it's pertinent.