There's cliques specific to forums, too.
Usually one won't find a cooking and baking primitive outside the cooking and baking forum, although one time I caught dear old sweet Lu posting an article by the now-gone "NanceGreggs" primitive in General Discussion; I dunno what was up with that, because it seems to me dear old sweet Lu should be taking care of her own forum first.
And the cbayer primitive, once a "preacher's kid," defends God in one of the religion forums, but generally the cooking and baking primitives hang in their own place, rarely if ever venturing out anywhere else.
The Lounge clique, led by their master that "Aristus" fellow, is another one.
And then you got primitive cliques that don't hang exclusively or mostly in one forum, instead posting all over the place; they're generally one-topic, one-track, one-issue primitives--to wit, the gay primitives. God forbid if a non-gay primitive or a mole tries to join their tight-knit cloistered little group.