I’m at last attracting spambots! Hopefully, that means some people are reading, too.
I’ve added [[en:CAPTCHA]] to the site using [[http://www.blueeye.us/wordpress/index.php?p=5|Bot Check]]. Although it does a less thorough job of scrambling the image than the [[http://www.gudlyf.com/index.php?p=376|AuthImage]] plugin, I was uncomfortable with the number of changes I had to make to WordPress to make AuthImage work. (If you install Bot Check, be sure to read down in the comments for a change you need to make to it for Wordpress 2.0 and later.)