I started getting some stupid spam bots registering and after a few days spamming the forum, so I installed a few packages to deal with the issue, including the Akismet one. Hopefully this will put a stop on the spam on forum-side.
Related posts
Tags: fighting spam
You can try a simple question like “write in one word with small letter the number 24″ with the answer “twentyfour”…
I did have that back on phpbb but every month or so I had to change the question/answer. not too “funny”