Bah, the comment spammers seem to have discovered my site. I've gotten about 20 spam comments in the last 24 hours. In frustration I wrote up a quick captcha feature for my comment submission form (Captchas are those images with the distorted text that you type in to prove you're a human), but now I'm not sure if I should use it. That puts the burden and inconvenience of preventing spam on the users, rather than on me, and that's not fair. Maybe I should just keep deleting them manually. Of course, 702 of the 891 comments on the site were left by users with BinRock accounts, so I guess I could just require captchas from anonymous users. That might be a good compromise.