Its a tough one.
I tend to agree with Mr Ayers, if you sub divide too much I for one would miss half the forum. One of the attractions of this forum is its diversity. I end up reading on subjects that I otherwise wouldn't bother with. The way the system works now allows a non-specialist to comment and add questions, and get answers in a way that he/she would find it hard or awkward to do in a more singular forum subject
As one signature put it - "specialization is for insects" Add more sections, but lets be sure we don't alienate any newbies. Its a broad and diverse subject matter for a forum, with its fair share of eccentric and knowledgable participants. I think it even has its own little "atmosphere" - lets try and maintain that.
Maybe we should just increase the font size of the search button <img src="/images/graemlins/smile.gif" alt="" />
In general I agree with the sugestions already made, but I think the final solution will come with a trail and error approach.