Nothingness: If you are the Big Boss of a fellowship, you can create a poll inside your fellowship. (I believe Little Bosses might be able to, as well) Only Fencer, Tanein and Coan.net can create site-wide polls.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)