Good work, esp idea-to-deployment in about a day. I found this to be pretty addictive. i.e. I started filling out stories rather than hammering HN, Google News when I've got time to kill.

Suggestion: email users once per week/fortnight with a partial story + embedded form so they can play via email, especially if they haven't played for a while. Increase/decrease frequency of email sending depending on how they respond to playing via email.