Some naughty spam bot posted 30 comments to old articles last night (I don't know which ones, it doesn't appear to be anything recent). This irritated me sufficiently, that I have enabled the "type in the word in the picture" checking feature for posting comments. I have no idea whether this is effective or not. If the bot comes back for more, then I'll have to enable the "moderate comments" feature in addition. Which would be a shame, since I don't care about moderate comments, I want to only see immoderate comments.
If you notice where these spam comments have been posted, I might be able to edit them out, although I don't know how easy it is to delete comments with blogger, while leaving the legitimate comments that directly insult me in place.