"The only thing necessary for the triumph of evil is for good men to do nothing."

And the only thing necessary for the triumph of evil, when its sole purpose is to provoke people to do something, is to do something.

This is how I see things:
Anyone who posts to a thread validates and supports it.
Anyone who posts to a thread wants it be read by others, who might have missed it if they hadn't refreshed it.
Anyone who thinks they have to add their opinion to every thread they disagree with, had better search the forum thoroughly, because I'm sure you've missed some.