Replying to 'lock' function for threads

Wouldn't it be a good idea to be able to lock a thread. I know of a lot of other forums that do this, and it would be really useful here. Instead of having Ginko's thread turn into a shitstorm, he could have made the thread, stickied it, then locked it. So people would see his message without it getting completely distorted and now deleted...Or lock threads like the chad's gap thread, cus people can search for it and see what it is, but it doesn't need 20 pages of bumps...