A followup--I just want to say that Nsusa's blog post is probably 95% social engineering -- the sites and Wikipedia contributions seem useful, but upon more serious review, they're cut-and-paste chunks of text with much less informational value than appears at first blush.
I admit to being taken in by some of his anti-DMoz bluster but I now doubt he has much good intent (i.e. he is probably a professional spammer).