I just wanted to say, this is a brilliant idea for a mod. I used to not have much of a problem with spambots, but the last few months have been horrible...We'd average 1-3 spambots per day and sometimes as many as 5 or more. I hadn't installed any extra protection because from everything I had read, the spambots were even finding ways around these mods...but I've been following your mod here and it looked to be pretty foolproof, and so far, it is. I've been running it for a few days now and haven't had a single spambot register..Without this mod, I probably would have had 10 spambots if not more since then.
Great work and let's hope I'm not speaking too soon