Comment Spam Plugin

While working out solutions to combat form spam on client websites, I stumbled upon a very simple (20 lines simple) method to stop form spam. So I decided to try and bring it to wordpress comment forms too. But the only wordpress blog I have has very minimal amounts of comment spam so it’s hard to tell if its working, or if I’m just not getting any spam.

So if there is anyone out there with a lot of spam who would like to try it and let me know how it does, that’d be great.