Rands has it totally right: “The goal is not to become a Mind, it’s to make connections…. make connections with people you don’t know.”
My other assumption is that the influence of weblogs over the next decade will only increase, again, because of productive information economy the weblog-o-sphere encourages. I write a weblog because I choose to. My credibility either goes up or goes down by what I write. The more credibility I have, the more hits I get, the more eyeballs are on my words, the more credibility potential I can achieve. We’ve been over this.
Write so that your ideas are out there. You never know who might pick ’em up.