OK, so that's extreme. But I saw an otherwise very interesting page and wanted to comment on it, but couldn't. And that made me feel, unjustifiably, that what the guy himself had to say was wrong.
It's making me think about how commenting should work - should you require people to sign up for some commenting system beforehand, on the basis that in the long run it will be better, or should you let them comment willy-nilly? I still have to think about this,