I refuse to post in this thread. If the topic wants to be saved, it can get off its lazy bum and do it itself without having others do its work.
(Failure attempt at being funny.)
What is the criterion for thread death in this case?
It is closed; does not appear in the "Recent threads" list; does not appear in "Hot Topics Forever" list; not posted to for a period of time (if so, what is the relevant length of time).
We'll know the thread is dead if the world ends.
The world ends if the thread dies - the thread is dead if the world ends.