Just installed my first CAPTCHA antispam system on Drinkhacker.com today at the behest of my web host. (We don’t get much spam, but, well, long story.) Installed SI CAPTCHA and it seems to work as advertised, page loads aren’t significantly impacted, and the images are easy to read. Anyone else have in-depth experience with CAPTCHAs on WordPress? Anything I should look out for?