It's a Bird! It's a Plane! It's a Medium for Storytelling!

Story is story, but the medium is everything.

You have a great story, right? It's about a girl who gets swept up in a tornado and taken to Munchkin Land. She has to find some Wizard, in order to get her butt home. You should totally write this story. But should you write it as a book, a movie, a TV series, a play, a webisode, or what? In my opinion, the answer should never be, "Whichever I feel like writing!"