Image the power of your editors and beta readers to commit changes for your review through a freely distributed application where each participant can enact changes without the knowledge of others doing the same.
Medium stepped into the creative writing git fray with their Top 10 Reasons Git is a great tool for creative writing in which they touch on Git-Scribe, "The git-scribe tool is a simple command line toolset to help you use Git, GitHub and Asciidoc to write e-books."
Then there is Hoborg, dieselpunk science fiction novel created in Git; a book that is contributed, commented and edited by its readers. Looking to involve your audience?
Zen Mode allows you to remove distractions and directly work on your "cloud", your own 750words.com that you can give others access to.
I reached out to a Git user group on Google + looking to see what others are doing:
Next week I will dig a little deeper into Github, specifically github.io, a place where you too can host your own website. For Free.
Below is a 20 minute TED Talk by Clay Shirky on the power of Git.