Had it working well for a brief time with an addon I grabbed from SMF but I did not realize that it was a BRIEF trial and they wanted money after that. Well of course I declined but it left us with jacked up anti-spam measures.
I have gotten CAPTCHA running again and added security questions to help Bot proof the Forum.
From what I have been reading, Bots can now work through math problems and it recommended that you have at least 5 questions and the registration picks one at random. I made up about a dozen! They are not complex for humans and are similar to this:
List all of the Upper Case letters used in Death Before Dishonor
. The answer would be DBD
Cross your fingers!