A minor change, but one that I think is needed. I have eliminated anonymous commenting. Nearly everyone who comments here has either a Google account or uses the OpenID feature already, so I don't see any compelling reason to have anonymous commenting. While I welcome visitors and encourage comments on the blog, the anonymous commenters here don't add much to the discussion -- in fact, it seems to be more of a poop and run sort of scenario most times. If you use OpenID, you can comment without any trouble, but we can actually address what you're saying without having to chase ghosts.