After two days of no attacks, comments were hit by yet another spambot today, so I've decided to implement CAPTCHA. CAPTCHA, for those of you who don't know, is a verification system that requires a user to read a contorted word or two and type them to prove they're a human, not a spambot. I chose to use reCAPTCHA for our site due to its readability and the fact that it's got an alternate audio function for those who have difficulty reading the text.
As a result of this addition, I'll more than likely be reactivating comments on older posts when I have a little extra time.
Please test the system by leaving a comment and let me know if there are any issues. Thanks.