I have uploaded my latest version of this plugin. Saidly it is still not configurable trough a configuration file (which could be easily added) but partial detection is now working. Remeber the predefined blocked words are only for german servers, therefore many of you definately have to adapt the blocked words array within the sources (which should be easy as well!).
However from my experiences I only can advice such a plugin for public servers to prevent players from using really bad words. We have a big success with the plugin on our gameservers.