Looked like my registration question got out to enough spammers to where it was common knowledge.
I changed the question, so this should slow them down a bit.
I also knocked out about 100 spammers which registered in the past 6 months. Most hadn't posted yet.
If somehow I accidentally killed your legit account here, let me know and I'll restore your account. Use the Contact Us form at the bottom, or just re-register.