Haloscanned

I've decided to restore Haloscan comments to the blog (it looks ugly, I know, but it's easier to post a comment with it than with the labyrinthine blogger posting rules).

This unfortunately -- and unexpectedly -- wiped out earlier comments, but I saved some of them and am restoring them where possible (I've put back the long comments thread in the long, off-topic political post, which I wouldn't advise wading through again unless you want to see what I get like when I get really angry and stuff).