I had the exact same idea a long time ago. I just kept toying with it in my mind. It's so awesome to see someone actually make it.
You've made a very good first version. Just get lots of people to use it to write at least one line and then publish and popularise the finished stories on social networks. You will get to see if the stories are actually any good and also might get ideas on improving the app itself.
Thanks. The idea is fun, but getting people back is tough. Let alone getting them to share the link with their friends. I had fun building it and iterating it over the last few days.
I'm going to give it a couple more days and if I don't see much traction I'll probably let it pass away quietly.
I wonder if this is better suited as a Facebook or twitter "game", at least for a start. For example, some friends dragged me into playing the name game on facebook and although I hardly check Facebook, that thing made me go back quite a lot. Once you get a good base of users you could get them to an independent site which is more usable and focussed.
You've made a very good first version. Just get lots of people to use it to write at least one line and then publish and popularise the finished stories on social networks. You will get to see if the stories are actually any good and also might get ideas on improving the app itself.