Would it be possible to have an option to have a "drop down" box for the "yes" and "no" answers? So if you asked the question on the registration page "Are You Human" they would just use the small drop down that had the two answers "yes" or "no" with no being the default so it would not pass the registration on(so they have to answer yes). Makes more sense than having to have answers like sure, of course, why, what do you think, etc., plus the yes and no. I have used a mod like this on 2.3.6 and it sure helps stop the non-human spammers!