I've already bumped my head on this several times. As a GM i've noticed that for some RPG games there is just no listing, which makes it incredibly difficult to get a group together, because almost everyone looks for a group playing their game of preference - this in turn in mostly due to the fact that there is no other way to sort through all the listings. As a Player i'm often left guesing whether or not a game would meet my preferences with regards to the Theme of the Game and the Mood of Game Play, often resulting in a Player/Group mismatch (and sometimes harsh words have been said as a result). How about giving people the option, either to look for a group that is playing a specific system, or to look for a group that embraces Theme and Mood. I think you will find that people will really appreciate the choice, if it was presented to them. I know i would.
