After another round of posts from 3rd-world sweatshop spammers (i.e. people whose job it is to manually log into websites in order to circumvent CAPTCHA forms and post spam links) I've implemented a "troll" module that allows me to block IP, setup blacklists, and other means of fighting back. I seriously hate the amount of BS that one has to go through to subvert these scumbags, but I refuse to let them make a mess of my site.