A free, secure and accessible CAPTCHA implementation is available from the reCAPTCHA project. Easy to install plugins are available for WordPress, MediaWiki, PHP, Perl, Python, and many other environments. reCAPTCHA also comes with an audio test to ensure that blind users can freely navigate your site. reCAPTCHA is our officially recommended CAPTCHA implementation.UPDATE 10:30a - It works! The Pages are now using reCAPTCHA instead of the "screen door" security method I was using. Here's a couple of reCAPTCHA ASP function examples at Google Groups. I don't know if I'll hook up the other blogs yet. Think I'll let it run here at The Pages for a while before I do.