One point I tried making is that you could take the forum as a whole as a culture. We have a group of 3-400 people in total, with a decent handful of people participating in a wide group of things, from discussion within the sexuality/gender forum, relationships, and the stuff in the aro discussion forum, as well as all the posting games and stuff in the arcade. With all these people come together that have something in common, you could say that's culture in itself, so I don't find it necessary to create a new subforum for it when it's something that is all over the forum in the first place.