The Land of Shadow is a lotr website dedicated to Mordor, orcs, Sauron and etc, in my opinion is a cool website and it has a lot of information about everything that you want to know about the evil side in lotr, here you can see the map of Mordor, it has the orcish bestiary, the mordor community forum (in which I am also inscribed beside the Arwen forum), and other stuff.
Here´s the link:
http://www.thelandofshadow.com/