I've gotten email from quite a few of you stating that, while you're happy that comments are back, you're not all that crazy about registering. Well, I can understand that but it's just another level of protection from comment SPAM, don't'cha know? And comment SPAM was the reason I turned off comments in the first place. That's OK, though. If you don't want to comment, you certainly don't have to ... email's OK with me.
After wrestling with the process, I've upgraded this installation to V3.16 of MovableType. Comment moderation is available in this version and I've turned it on. That means that you can comment again.