Well, what do you know. The Haloscalypse has arrived, just a week or so later than predicted. All the old Disputations comments are gone,* and I don't reckon they're worth the asking price of ten bucks a year to keep them around.
Not that the comments weren't valuable. But they weren't invaluable, and their chief value, I think, lay in making this blog more worth reading in time to follow and perhaps join the discussion.
In any case, now we'll see how the built-in Blogger comments work out.
* More precisely, the Haloscan comments are available only in archive format, and I don't know how to import them into Blogger comments.