no they dont if they did you would see crap like blocked multiplayer stuff.
Once someone replies the topic goes to the top of the list so on a thread like the one about the orc screenshot a lot of people post keeping it on the top of the first page.
So the blocked posts stay there for a little bit but you never have to scroll down far to find a thread with more then 2 pages on it.
Also why this page is on the top.