The Superhero Paparazzi series by Mioxy is all about keeping the secret in secret identities.
Superman in a less candid moment would prefer not to have the world know that some of his powers come from eating Popeye spinach. Or that he smokes, drinks and has a weakness for Vegas slots.
Batman would rather keep his hamburger addiction in the dark or have that old Bat Mobile sale erased from the books.
Neither would Spidey want us to know that his law breaking includes being an aspiring graffiti artist.
Is the Joker ashamed of showing of his good side?-- which includes attending AA meetings.
It is all part of the new tend in fan art that tries to make Superheroes more real by moving them down a notch.