i think it worked better as you could post something and still be able to find it relatively eaisly without having to sift through pages and pages of unrelated discussion. Atleast if all "car" type threads are kept together it'll be much easier to search.
For example when ever we have a "buying a xxx car got any advice" threads of which theres often a few, theres usally some bloody good info in these threads which just get lost into oblivion never to be seen again.