I have a question for artists!

Does anyone know if there is a list of art galleries, Online. Like, those art posting sites like Y-gallery. You know what Im talking about? I think itís like a branch off 4chan or something???

check ygallery if you dont know what im talking about, I think they are all pretty basic layout like that one.

Is there a list of them? Because I want to join a few of them. Thanks.!