The book's opening line is: "Helen has just registered on Facebook."
Sentence two, if it gets enough votes by Facebook users, would be: "Friends have been telling her for a long time to do this, but for some reason she had continually postponed this moment. Why? She could not answer this question exactly."
The rest is up to online wordsmiths who choose to install a community book-writing application called LiveBook, launched on Tuesday by both Facebook and the Bebo social network.