I give Bill Finger credit for as much as I accurately can. I credit him with being the co-creator of Batman. I credit him with nicknaming Batman "the Dark Knight." However, I have been careful not to credit him with coining that phrase.
Savvy writer J.L. Bell picked up on this subtlety and took it a step further. His post brilliantly shows one kind of gap that blogs fill. Where else would you see such a piece of research?