But I think separating buying and selling from the rest of the forums takes away from the sense of community that was so cherished in the old B/S/T - we had conversations about items, talked about other things, and had a place to egg each other on - with it being separated, it's an island unto itself, and thus far is lacking in both character and community spirit.
It may be functionally better, but like straight shaving, I liked the old way - it may not have been as efficient, but it had charisma. Adding it to the new posts, I think, would go a long way to re-introducing the community feeling existent in other areas of the forum.
Just my $0.02
Mark