So it's become clear that my comments were messed up. I had set the junk comments threshold a bit high, apparently, and many legitimate comments were being flagged as junk and not displayed. I've fished out as many as I could find from the junk rolls and they should be back up now. My apologies.
Obviously I have no interest or desire to keep people from posting their views on this site, it's often quite entertaining, but I do what I can to stem the unending tide of junk comments. It's an annoying game.
So comment away. Please email me if you receive any notification that your comment has been flagged or moderated and I'll see that it doesn't happen.
