What Makes a Super Hero?

So as you all know, one of the greatest things about comics fandom is arguing with your fellows. The argument I've gotten into more times than any other centers around a seemingly simple question: what is it exactly that makes you a superhero (...tm)?

I like to make the assertion that Jesse Custer of Preacher, is a superhero. Costume? Check (don't tell me that white collar doesn't constitute a costume, because I know you've seen it done on Halloween). Sidekick? Check. Superpower? Um, CHECK. There was even a character on NBC's Heroes with a similar power to Jesse's Word of God.

I believe it was Dan who said that if Jesse Custer is a superhero, so is Spider Jerusalem of Warren Ellis's Transmetropolitan. At first, I thought Spider couldn't possibly be considered superhuman, but I've had a change of heart. He has a costume, and not one but TWO sidekicks, after all. He may not have a power, but neither does Batman. Bats and Spider do however have gadgets. Lots of cool gadgets.

Wikipedia does not list either gentleman as a superhero. America, internet, if you believe that Jesse Custer and Spider Jerusalem are superheroes, show it by changing their Wikipedia articles! You have been challenged!!

-Elizabeth