It’s a collaboration sensation!
Check out these sites for other collaborative storybuilding opportunities:
… and then … is simple and elegant, and probably quite addictive (I’m about to sign up now). The stories are only 14 ‘lines’ long, and users vote on which line should be used next in each story.
Writer Hop seems to be a bit more serious about producing publishable stories (though there’s also an option to start a ‘ridiculous’ story). The person who starts the story owns it, and gets to choose whose contribution will be used every step of the way. You get ‘author points’ if your submission is selected for use in a story.
(Get in there, get hooked, but don’t forget to throw a few sentences my way 🙂 )