Writers, need some practice? Wanna get your writing groove on with the pros?
Head to ficlets.
You, as a writer, post a very short (not more than 1,024 characters) piece of fiction or a fiction fragment on the Ficlets site. People come to Ficlets to read what you’ve written, and to comment on your piece. If they want to, they can also write a “sequel” to your story or story fragment, carrying the story forward from where you left it. Or, alternately, they can write a “prequel,” explaining how you got to where you are in the story. All sorts of people can write all sorts of sequels and prequels — and of course, other people can write sequels and prequels to those. What you end up with is a story with multiple authors and multiple branchings — lots of possibilities and surprises.