Is Sha Fa really comfortable to sit?

I was wondering who coined that word "sha fa (sofa)" in Chinese as a way to reply a post. I was first amused by its vivid meaning implying that the person would be the first one to make that reply. A kind of privileged position. (Baidu has several explanations for this word's origin: http://zhidao.baidu.com/question/55586934.html?fr=qrl). And this word has led to a few related coinings like "ban deng(stool)" and "di ban(floor)", respectively indicating the orders of replied posts, like the different floors of a building or tiers of a structure.

However, I am now so fed up with the word "sha fa." Whenever I view some celebrity blog, almost unvariedly, I can see the first replied post being "sha fa", followed by a string of "ban deng"and "di ban," and I can also often see people replying something like "Feels great with my reply on the first page!" Often, serious replies can hardly be visible on the first page of a post.

Is it so fun and so meaningful to occupy that virtual position to show one's superiority over others? Other than "nao can (brain lost/brain damaged/brain dead/brain damaged)", I can't think of any other word to describe this kind of stupidity. No wonder some smart bloggers like Wang Xiaofeng has entiredly blocked some posts like "sha fa" and "ban deng", and he even jokingly uses "hei xing xing (chimpanzee)" and "cao lv chong ( paramecium)" to refer to those who reply to his blog posts as a way to precaution people to avoid being among the group of "nao can" repliers. Mmm, what a nice title!