Sub-Communites

So I have been using the community beta for a little bit now and one of the things that I think would be helpful would be to define the sub-communities a bit better. If possible it might help to adopt a small subtitle for each one. I know there is the issue for a clean look and efficient space use but I have seen a above average number of topics in the wrong area due to a miss-communication as to what each community was intended for.

Just a thought anyway.