books.worksinprogress.co is a cool site for people who write books and people who read them. As they explain:
Books in Progress is what we call a “public drafting tool”: Drafts will be made available for comment from the public, allowing for direct collaboration between author and reader.
As a reader, you can comment on a passage from the text, or respond to another comment. The author will accept or dismiss these comments. Once the author implements comments, a new draft will be created and the current one archived. Helpful commenters will be thanked in print at the author’s discretion.
Books in Progress was developed by Works in Progress in partnership with Stewart Brand and Stripe Press.
For authors with great readers, I could see this being an invaluable tool. Drop on by the site and see for yourself.
Smart People I Know 