I do see the need for locking some topics. But to use the link below as an example, I don't agree with locking threads because of a lag in constructive talk or a small debate that gets slightly heated. In the below example, it was locked before I could put some serious (non "spam") input into it.
http://www.awakenedlands.com/forums/view...php?t=3742
Maybe a resolution, move the threads that get out of hand into a new forum room, The Drek Room or something to that effect. Post a warning that "any individual personal attacks will be deleted" in that room.
And... a little mindless discussion keeps a slow thread active and makes sure it's seen by all.
I do recognize that I am part of the problem from time to time. My mouth gets me in trouble on AL.