As anyone who runs their blog on wordpress, spam can be a serious issue if its not managed well. I have looked far and wide for a good anti spam plugin for wordpress and found the  following plugin to be the best, yes thats right BEST, anti-spam plugin for wordpress: Cookies for Comments.

“This plugin adds a stylesheet to your blog’s html source code. When a browser loads that stylesheet a cookie is dropped. If that user then leaves a comment the cookie is checked. If it doesn’t exist the comment is marked as spam.”

The plugin has blocked every spam message I have received since I installed it. If you already use Akismet, I would suggest you also install Cookies for Comments.