Well, this has been a while in coming, but for a variety of reasons I am switching to Disqus comments on this site. Essentially this means commenters will have to register, though I feel like the registration is pretty un-intrusive as Internet things go. Active commenters in the blogosphere likely already have a Disqus account. And there are some definite benefits in terms of comment ranking and such that I hope will offset any hassle. I have been testing Disqus on Climate Skeptic, along with the security updates I have been slowly porting over here, and I am pretty happy with the result.
What this means is that for several days, comments will disappear here as Disqus imports them. Though they they promise a day turnaround, on Climate Skeptic it took them nearly a week. With all the comments on this site, it may take a while. New comments will still work, but the old ones will go away, and then magically return a few days later. Hopefully.
By the way, this is a mild illustration of what started the security lockdowns at the climate blog. These are actually minor spikes compared to some in the past, and so far I have seen no similar patterns at any of the other blogs I run. A number of folks active in the climate debate have been hacked of late.