There are worthless communities of comments (ala youtube, engadget, most general blog sites) and then communities where real discussions and interactions and even friend-like relationships develop almost like a true forum (slashdot, to a certain extent, wonkette, and - formerly - gizmodo).
Gizmodo had one of the most tightly knit but still open, responsive, and interesting commenter communities of any blog I had ever seen. It even rivaled some forums.
And then the entire Gawker family of blogs got their now infamous redesign, and the comment system was broken. You could no longer get notices of replies, conversations died before they even started, and most of the "starred" commenters left the site (and many of those who didn't immediately, and who spoke out against the changes and the brokenness of the new design, had their star removed and/or their accounts banned).
So yes, Mr. Denton, there ARE online communities whose comment sections are worthless (like yours). But there are those whose comment sections are not, and for a man whose single minded drive to "better and newer" when in fact you were only achieving one of those (and only by virtue of it being later in time) to claim that all comment sections are worthless (because yours are) is just as disingenuous as what you did to your commenters.