The answer and form name are hard coded, it will be trivial for a spambot update to bypass.
oh ya, I am sure of that. We were getting about three spambot registrations a day even with the word image verification. But since I did this mod about a week ago we haven't had one register yet, and I removed the useless word image verification.
So for now until they bypass it, its nice not having to delete their accounts on a daily basis.