marf: myBB is also my personal favorite
We won't change in the close future, though.
I removed some math questions which were obviously weaker
Keycaptcha is a lot better than the regular captcha. Its what i use on my site instead of the regular captcha
I dont believe on word of what you stated about KeyCaptcha. I've used their services for years with out any problems nor any evidence that it is ran by spammers. You have your own view and I have my own view. Enjoy the day.