Now this was an interesting find: in Vampirella Magazine #22, there's a writer profile on arguably comics's greatest genius, "Stainless" Steve Englehart, in 1973, the very height of his early career.
As an Englehart-aficionado, this hagiography doesn't tell me anything I don't already know (except for the fact that Englehart, along with Marvel-horror guys like Don Glut and Marv Wolfman worked on the Warren Publications Vampirella mag), but other people may find the story surprising: Stainless started off in comics while in the army, after meeting Neal Adams and becoming an inker for him, and then becoming an assistant editor and then scripter.
Warren Publications always had the brassiest comics reporting; they were always pull no punches and raw, and tell a counter-story to the 'official events.' They always, always published letters with strong and dissenting points of view, even ones that make the company look bad. They published letters that said that Vampirella and her sexpot ways was pretty much for male chauvanists; they published letters arguing that Vampirella was lame because of her science fiction elements. In short, Vampirella letters pages were the liveliest and argumentative I have ever seen ever published, and they have never entirely been replaced.