"as it gets a lot of traffic."

 

Well, if we compare it to all the physics sub-categories put together it gets way less traffic. :I And now that I think of it, I can't think of how to divide the chemistry-category properly. And if we'd have "Pyrotechnics" and "Chemistry", the Chemistry wouldn't get any traffic at all. j/k

personally i cant really see what's wrong with it at the moment.

 

however a few more sub-categories could get more google searches to us and possibly more members, for us already here it all seems ok. (from my point of view anyway).

Google searches rely on context (i.e. the page content) and authority (which is derived from sites that link to us, and sites we link to), not random labels on things. Hence it doesn't matter what category a post appears in - if it's spiderable, it gets indexed. Like I said in the other thread.