I've had to turn on comment moderation, in response to a particularly persistent troll who -- apparently in an effort to convince me I was wrong to ban him -- is now "taking an internet dump on [my] internet lawn" (his words from one of the many, many comments I've had to delete). I think he might be drunk.
For the rest of you, I'm online most of the time, so there should be minimal delay between posting and comment approval (or rejection). But if you post at an irregular time (or when I'm in class), there may be a lag. Sorry about that -- hopefully I should be able to lift moderation in a few days.