Hi,
It is more of a hack than a plugin I guess by calling it a plugin you had higher expectations of it than you should.
THere is nothing to add to the plugins menu of your geeklog nothing to twiddle with. You set it up, use the config file to make it work for you then add the link to your site. thats it, nothing else, you now have the Open Directory Project wrapped in your GL.
Nothing else
What did you want it to do? There really is no more to it.