There’s something wrong with comment moderation at the moment. Currently WordPress simply will not allow me to approve a handful of the comments. So if your comment disappeared into moderation never to re-emerge that’s what’s going on. My apologies! Me and my genius tech staff are working on it! (Well, mostly them cause I have no idea how to fix the damn thing.)
Update: Looks like all comments trapped in moderation have now been released. Here’s hoping that’s the end of that problem.