Yes, thanks. I'm using it. It's great! I'm actually trying to create quiz questions (contest) where it will only accept the correct answer that I specify beforehand. So I thought I could use a custom captcha to do this. I want to post a question like "what color is the sky", and the only answer accepted is "blue". Then the first person to answer correctly gets their answer posted, gets points, and the question is closed for any further answers. Would make a great add-on (quiz contest questions mod). I'm thinking that using the custom field for a custom captcha might work.