Sorry, but I cannot agree with Kern's observation about blog comments... Unfortunately open blogs and wikis are subject to almost continuous and annoying spamming. I have a few wikis around and I had to close them to proper registered users, in order to avoid that problem. One cannot spend his lifetime to despam manually wikis, by revisioning or what else. Some programs do not allow easily despamming changelogs too.
I would add that a few of them allow easily bot registration also, so they do not protect the blog at all against smart spammers, when comments are activated.
That said, I'm yet quite annoyed by MLs flamewars, I would avoid to see blogs flamewars too and Planet flooding, even if we would live in a perfect world.
