http://forum.romulation.net/index.php?topic=7271.0 Seph is working on an updated Genre system. The old one was abused and removed.
This is not going to happen even when(if) the genre system is up. Genres are user defined and as such it will seriously confuse people if they search for Doom in FPS and do not get any results back because no user defined Doom as a FPS.