Can A Comment Box Be Added?

Forum Url: http://thecolonnaderoom.smfforfree3.com
First off, I'd like to say how glad I am to have my group at SMF. I moved it over here last winter when MSN Groups closed, and it's been a smooth transition. Thanks for having a user-friendly set-up!

With that said, there is one small thing that I miss about MSN, and I'd like to suggest it for here. Is it possible to add a comment box to the registration screen? That was my foolproof way to keep spammers out in the past. For example, my site is about a T.V. show, and I learned early on that folks who left comments about "wanting to make new, special friends" turned out to be porn spammers every single time. But if folks left a comment that was specific to the T.V. show our site is about, they turned out to be legit every single time. Needless to say, we only accepted folks who mentioned the show. I'd love to have a comment box available as a screening tool again if possible.

I figure the worst you can say is, "No," right? LOL! Thanks for listening!