Drupal Comment Spam

While I was sleeping, some nice web bot came along and added about twenty different spam comments to various Cooperative Digest posts. You may have seen these before I deleted them; they all contained tons of links to online poker web sites. I was hoping this would not happen, as I wanted to leave open the ability for anonymous users to post comments. Unfortunately, in today's web frontier, that level of openness is not possible without spammers taking advantage. And now that they've found the Cooperative Digest, I'm sure the bots will be coming back for regular visits.

For now, I've had to change the permissions so that only registered users can post comments. I'm not sure when I'll find the time, but I'd like to work on a mod to Drupal that will use the "captcha" feature for comments, such that the person entering the comment must type in one of those weird looking squiggly words from an image, which prevents the bots from being able to do so. Then I'll be able to turn anonymous commenting back on. Please bear with me until I get this, or something else, figured out.

Thanks,
Dan