It makes sense since the game comes with just four stories (not counting the expansion) and the designers said then that they had planned for 100 stories. So just following the style they have set, anyone can add new stories to the game.
I just thought if we got a group together that had similar thoughts we could put out more stories so people would have more to play with. It couldn't be too hard I wouldn't think to strip down some of the images and insert new ones with new rules.
Just trying to keep the game fresh and exciting and like it was said already there were planned 100 stories or something and having only 4 is just not enough