If you have made mistakes, even serious ones, there is always another chance for you. What we call failure is not the falling down, but the staying down.
Ryan Scott Ottney wrote: Also, there are potential legal problems here. But the way I see it, it's no worse or different than sites that post fan art of characters and comics. And if that fan art casts those publisher's characters in a bad light, they do take legal action. Plus, once you start using their characters for your writing samples, you lose the eyes of those companies' editors and writers (because of the potential legal issues that could aries, they would probably just stop reading the site altogether).
I'd rather play it safe and not do something like that around here. That way, after I finish with the coding around here, I'd be in a more comfortable position for approaching Marvel and DC and attempting to get legal permission to post scripts from them again.