I finally updated the software on this site to the latest SubText build. That has better software to prevent spam. I also updated the CAPTCHA to be case-insensitive and deleted over 40,000 pieces of spam from our comments. I still have a little ways to go on the spam removal. That will happen over the next few days.
This is a companion discussion topic for the original entry at http://billg.sqlteam.com/2007/01/27/blog-updates/