Free: Contests & Raffles.
Why? Seems to be that you either want to get in there or you don't. Leave it open and the decision left up to those who are interested.Besides, do you really want to be King, and have to decide who gets access to discussions? Seems like it would limit debate, and may paint the moderator in a bad light if certain people were excluded because of their views. Variety is the spice of life, it seasons the stew in our melting pot quite well. Don't dilute the mixture with a filter on the spice mill.
If it realy accomplishes nothing, why bother?