One of the latest Web2.0 startups, and one of the few with an original, well-executed idea, is CoComment, who kindly offer to track and aggregate all your comments scattered across the Blogosphere.
I’ll add to this when I’ve built up a hefty wad of inane unfunny missives myself.
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I have often seen reminiscences of people I have never even heard of, and I fail to see -- because I do not happen to be a 'Somebody' -- why my blog should not be interesting. My only regret is that I did not commence it when I was a youth.