AntiSpam
Comment spam is a fact of life if you have a blog. One way to combat it is to make commenters add a code that is unreadable to spambots. You’ll notice a few new plugins added to help you in this - Spam Karma, Bad Behavior and Peter’s Custom Anti-Spam. If you use Spam KArma it’s unlikely that you’ll need Peter’s Custom Anti-Spam. Celebrated in the blogosphere, a combination of these should keep out the spambots. Activate them in the plugins section to dramatically reduce the amount of spam you get.