I don't where to make the suggestion but since anything that won't fall to any category would be general, so here goes. I hope administrators will be able to read this message.
I suggest that in the Buy/Sell Forum, there should be separate subforums for those who buy and a separate one for those who sell for each category. In my experience, e.g. I am looking for those who are looking for books coz I want to sell mine of different varieties, I end up scanning pages and pages of threads for it. But some people who is not like me would ideally post them as For Sale. So here's what will happen. If nobody wants to scroll the different threads because of tiime constraints -- for sale/for hire/looking for, they'll just post and post, eventually, buyers and sellers may not meet at some point after all with both posting their own concerns and nobody reading it.
That's all I have to say.
Thanks.