>In other words, before his death in 2010, Salinger became the ghost in the machine of American literature, embodying the battle between preservation attempts of his exterior works, and therefore the maintenance of their immortality, and the need for self-preservation and an undisturbed, peaceful human existence.

Salinger's works are referenced frequently in Ghost in the Shell: Stand Alone Complex - I wonder if the word choice here is a reference to that series.