So, "while I was away", my web host did a couple of very cool upgrades. I likey.
Unfortunately, one of them broke my WordPress install in an extremely subtle way. It disappeared the email address through which I receive comment notifications. This has had two consequences: people left comments that I didn't know about, and spammers left comments that I didn't know about. 3000-odd of them, actually, mostly really nasty pr0n stuff.
If you left a comment, I didn't ignore you on purpose.
If you saw the ick, I apologise. It wusnae me.
Now the war on spam begins in earnest, with an investigation of what excellence the world of WP plugins has to offer...