In order to encourage civil discussion, it is a good idea not to needlessly annoy and insult other readers, cause them physical and mental stress and contribute to carpel tunnel syndrome and posting rage. To that end, I encourage posters to edit their quotes tightly.
The average reader has no desire to re-read an entire post when the reply is addressing a fractional part of it. Quoting the specific part one is replying to helps the reader focus on the writers point, while quoting the whole post serves to obsfucate the writers point, cause the reader to go into a mental blur, lead to lethargy and dementia, and create a general reduction in the quality of life.
The "whole quote" practice is particularly annoying when the response is directly below the quoted post. Does the writer think the reader has instantly forgetten what they just read a few seconds ago? The usefulness of this practice falls somewhere in between "Tits on a bull" and the "Don't Drink" warning labels on drain cleaner.
Physically, the extra scrolling required to get past this useless text contributes to carpal tunnel syndrome, sending a subliminal message to the reader that the writer not only considers him a doofus, but is trying to physically impair him.
Thank you to those who edit their quotes tightly.
Comments are welcome. Please quote only the relevant parts you are replying to.