I couldn't find any explanation on the site of what this is and was immediately greeted by a sign up/login. You need an about page and some screenshots. Congrats on your project though!
I'm currently working on changing that funnily enough, where I will describe it in more detail on the homepage, as well as allow users to try the site out without logging in, of course with the clear sign that any stories they generate won't be saved until they log in