Well, about the group inactivity, you are right here since I am the only one left to look after the group, but I log in dA cery seldom, so... Duh... I so hope the founder herself will return someday so that the group will start functioning again...
Just one thing here: if you want to publish fanart of your OCs only, then put it in the OCs folder; but if your fanart depicts both canon characters and OCs, then you should put it in the Canon X OC folder.