Responding to a person who is pointlessly complaining that a thread topic is useless is, in my estimation, a greater waste of "web space" than the complainer's post which in turn, by furthering the useless topic and encouraging pointless responses to the useless thread, is a greater waste than the useless thread itself.
Being verbose and redundant in formulating the tedious response to aforementioned complaints about the uselessness of a thread topic exacerbates the waste inherent in posting the said response in the first place . It's a good thing we don't care that much about "wasted web space".