"well, I agree"
No, this is a serious issue, and I believe many of us here have been guilty of it at one point or another. Yes, we need to deal with spammers all the time, but the flipside is that many of the first posts with members aren't open to discussion. Many of the new Halo 4 threads are a good title "insert name of new weapon here" and then the post is " I can't wait to ply with these weapons, they are so cool!"
One final thing is that after a thread has died, say after 1 month of being idle,someone anyways goes and finds it, and then brings it back up. Maybe after a thread is idle for say, three weeks it should be auto locked unless a mod exempts that thread.