A friend of mine and I just finished playing this and had an absolute blast.
I don't know why, but didn't expect this game to be as much fun as it was. At first glance, the prompts seem very simple, but, for us, at least, they worked really well to generate a story. I'm so pleased with the story we ended up with, in fact, that I cut and pasted all of our emails into a Google Docs so I can revisit it.
Well done! Thanks so much for a great game.