I realize this is my most juvenile post ever, but I just need to get it out there:
I freaking hate freaking spam.
I deleted all the old spam comments and installed a module that makes my poor readers do arithmetic just to add a comment, and the spambots still got in and started posting a few a day. So I've now upgraded to use the reCAPTCHA service to fight spam and contribute to a good cause. If any spambots still get in, I'm gonna have to start a campaign...