This works sometimes also to prevent bots. It can also be altered to
block the bot IP address for a small amount of time (optional).
If they still keep coming, you can change the ConfirmEdit type to
"ReCaptcha, although I see bots break that one too sometimes but these
will help.
Thanks Erik and Mikolka,
I already have ConfirmEdit with ReCaptcha, but lately a lot have been busting through it.
I think QuestyCaptcha is what I want.
Thanks!
Ron