Fearsome's very active, but there's a lot of adult stuff and anime.
Oekaki of Doom's almost entirely anime but they're quite open-minded there and they are a pleasant bunch.
Ptoing's VERY unactive, which is quite a shame because I love the art there. Maybe if you drew there too, it would grow. Wink wink. Nudge nudge.
Hehehe. Thanks for the links. Yesterday I left a drawing in Fearsome. It is true that it's full of adult oriented pics. Let me check the other ones. And maybe I will draw in the last one. The one with the good art.