Now there's many core books out featuring various supernatural beings - as well as supernatural antagonists (Demons in the new Hunter book) - and it feels like every other house contains a supernatural of some kind, and every other shady downtown building is the clubhouse for some grand secret society of monsters.
Personally, I like playing more isolated games: games where the other supernatural don't exist, per se. There might be glowing eyes that stare out at you from the darkness, but I like to leave it at that. I've found player's too often will fill in details in ways that pigeon hold story characters: A player's character investigates the glowing eyes that stare at him from the woods. They learn it's a werewolf, and after this the player (not character) states that it's a New Moon, Boneshadow.
This as a GM (Storyteller) frustrates me. 1. I probably am not using the Werewolf book, and 2. I very much believe that the unknown is scary. Even if players are wrong about specifics, the fact that they're forming images in their heads using specifics takes some of the fright away (and also misleads them).
Having secret societies of monsters works well towards running long chronicles, but taking knowledge of these societies into other games depletes the level of horror. Players of Vampire who know (whether it's true or not in your specific chronicle) that Werewolves are guardians of the Shadow and its borders makes them come across more noble, or altruistic and less savage beasts.
Other than Hunter, which depends on there being supernaturals to take down, I'm at the point where I want to discard all of the World of Darkness that doesn't pertain to the specific game I'm running. I might make up monsters that aren't part of that group, but I'll try to make them seem too much like other supernaturals that are already detailed in other books so player's can be kept somewhat in the dark about these beings, and thus (hopefully) run a more frightening World of Darkness game.
Has anyone had similar issues arise? How have you dealt with them?
Oh, and fellow RPG Blogger Stargazer put up a post recently full of advice on how to promote better horror atmosphere in games. Check it out if this interests you.
*Not entirely true. There are ghosts detailed in the WoD core book, but we largely ignored ghosts in our Vampire chronicle.
postscript: Also I want to thank typhinius for making me the awesome header that's now at the top of the blog. He also gave me an avatar and banner. Thanks again.