The internet (including MN) is full of stuff which is interesting to some, and not to others. Why the need to waste your precious time saying it? It just makes the thread longer (and a hell of a lot more boring), and puts other people down. 
While we're at it, it also seems pretty pointless to criticise threads for covering the same ground as has been covered before. What is wrong with discussing the same things in (even slightly) differing ways? Surely this is often what conversation is about?
NB this is a general comment; no particular axe to grind.