Spam: we hates it.
Most folks have gotten used to — resigned to — finding a steaming pile of the pink stuff in their email inbox. It's all over the place because the barrier to entry is low — the recipient (me, or you) bears the cost, not the sender. Anti-spam measures help some (if you use GMail you could probably be excused for boggling on being told that around 90% of all email sent is spam); ISPs fight a valiant battle to keep it under control. A less well-known problem is blog spam.
This blog has extensive spam-filtering features, and I've been beefing them up recently because of a new wave of attackers. Hitherto I've mostly been seeing spam posted by keyboard monkeys: cheap labour paid to post early and often, with keywords and/or links intended to boost the pagerank of whatever dubious website they're pushing in the search engines. (This blog has a Google pagerank of 5, which is respectable and makes it a fat target for spammers.) The spam bin autoempties after 30 days, and has typically had 200 quivering pink slices in it at any time.
Not any more. As of two weeks ago the spam load began climbing. If the trend continues, later today the 30-day spam bin should pass a thousand chunks of ... well, you don't want to see it; it's mostly random word salad (some of it Chinese) with keywords for various expensive designer products embedded in it. And the word salad chunks are large. If I could impose a 300 word limit on comments before auto-holding them for moderation, it'd trap 95% of the spam. Again, if I could be arsed to write a Movable Type plugin to ban comment posts with an empty name field, that'd work. Annoyingly, these jerks appear to be using a botnet; blocking by IP address is next to useless.
I just resorted to renaming the comment-posting script, just in case the spammers have got it hardwired. (I don't think so, but ...) Next step might be to begin permuting the fieldnames in the comment form. I don't hold with CAPTCHAs — from personal experience, they really suck if you don't have excellent visual acuity, and spammers have been known to pay people to break them.
The battle is unending. Just thought I'd let you know that it's not been lost ... yet.