Someone was asking what was going on but, by the time I typed a reply, Mods had deleted the thread (Go, Mods, Go!).
My guess is that it's someone with a script and some zombie bots. Since Admin is having problems blocking all this crap, I'm assuming that the zombies are widely distributed (ie, not the same IP or range of IPs). I hoping that whoever it is runs out of unblocked zombies soon but it may take a while. Until then: Happy Hunting, guys!