Editor's note: SPOILER WARNING: Do not read this story if you don't want to know what happens in "Amazing Spider-Man" #700.
(CNN) -- For decades, comic books have had major shake-ups in their pages, with varying degrees of fan support -- and outrage.
In 1992, well before the advent of social media, Superman was killed and comic books went flying off the shelves.
In 2007, social media like Facebook and Twitter were in their infancy when Captain America died.
And now -- due in part to the abundance of social media and the intense interest in Spider-Man's alter ego, Peter Parker -- a firestorm has erupted, after Marvel revealed that Parker will die, and the role of Spider-Man will be taken over by his archenemy, Doctor Octopus.
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