yes there are two servers that i can think of right now that are using this plugin. well according to the instruction, you are suppose to put the first 16 digits of your cd key and 32 digit guid number, which i did. did not work. i am guessing there is something more that needs to be done to the config.
If I recall correctly, that's what I did and it didn't work and when I inquired about it, I was told it didn't work. Maybe those two server admins messed with the plugin and got their own version working, but they don't want to share it. They also could be using a populating service. I know of at least one that works with COD 4.