A short while back, I did an article on blocking spammers in WordPress. After spending the past three hours going through our network of blogs and blocking the latest wave of spam poo, I have decided to post all of the IPs and stop-words we are blocking. This list can not possibly cover all of the spam nazis across the net, but it can save you some considerable time by eliminating all of the ones that have spammed us.
Just download the file below then select all, copy and paste the list into your WordPress comment blacklist (WP Admin -> Settings -> Discussion -> Comment Blacklist). Enjoy!