Matt Gemmell on the blog comments.
Matt Gemmell recently kicked the discussion around blog comments back to life, first by disabling comments on his own site and then by posting a short followup piece. He has now compiled a comprehensive set of the responses to his initial post. The cloud of discussion around this issue has generated a broad range of points of view that are worth the time to read.
I discarded comments here on A Lazy Sequence back in 2009 and have no regrets. I have found that Twitter, Hacker News, and Reddit provide much better forums for discussing articles I have posted than I could have provided here.