I can appreciate it probably is annoying for some, but I personally quite like looking through all the threads (especially if people have used good titles so you can tell straight away what the thread will be about)... if nothing else, I often find myself saying "oh i was thinking that the other day, lets see whats been said about it" even though you hadn't felt the need to post about it yourself.
I guess it's just a case of baring with it and scrolling through or as someone above suggests, use the search option.
Maybe as I have only been on here six months or so, it's still a novelty - ask me again in a year, haha!! x