This brilliant, thanks for posting, I always loved this.
It also saddens me though, because this page sums up exactly what so many writers and fanboys (especially ones brought over from TDK, which oddly was inline with this page anyway)get wrong about the character, which leads to batdickery all round.
It's a nice callout to those who have no clue here, like in Whatever Happened to the Caped Crusader when Joker states to the valet that he wouldn't kill him because it wouldn't be funny, and he only kills if it's funny.