Is your blog being sullied by trackback spam from gambling, drug or porn sites. Most trackback spammers leave a one way link out of your site to their nefarious domains and don’t bother to link to your site. This is the achilles heel of trackback spam.

I came across this cool tool - a wordpress plug-in to defeat trackback spam. What it does is validate that a reciprical link occurs as in a legitimate trackback transaction. If not - then it’s not posted to your site.
It’s called the Trackback Validator Plug-in. It’s a cool tool.