Comment Unfortunatly, they are required. (Score 1) 2
Most any web form can and will be abused by spamming robots, especially if they think it has something to do with email, news letters included. Often the robots will start attacking a form without a person looking at it to determine if it's actually useful to a spammer or not.
I have no love for CAPTCHAs ether, and I've had to write them.