This is an alpha version of the new version of the Three Strikes Spam Filter Plugin for WordPress. This version has various bugfixes and a hidden gem that I have wanted to work with for some time.
This version of the filter has a Naive Bayesian filter added to the other checks that were already being performed by the Three Strikes Plugin. The plugin, once installed, learns from all the comments that are posted on your blog. It then waits for spam. Once a comment is determined to be spam, its Bayes filter learns about the spam comment. Kitten's Spam Words is added to the interface to simplify addition of spam words and the install instructions are included within the download zip. I suggest the use of my dynamic list of spam words as a starting point for the plugin.
This is termed alpha software for a reason. It is developmental code and is barely tested. There will be bugs and some things will break. Also, the bayes filter is only as good as how much it has learnt from your blog and its comments. So it will get much better with time, but time it will need. I have included a TODO inside the plugin for those interested in the code and I welcome suggestions and bugfixes. This is released under the GPL.