I have seen there have been addet a form"builder" in the new version of BV. ( Awsome)

What I cant find out now, is how it works when it comes to security. About spamming.

I mean. I had the earlier version of the guestbook. But it got totally filled up with ugly links. The problem was huge. So I had to delete the guestbook.

Now, I see you have options for commentform. Wich looks totally great. But is it possible for everyone to post everything into it? Is there an option for a person who want to leave a comment, to enter a code before entering message?

Im not sure if I explained this correct.