We are using it to
- Decide on the structure of the book
- Get feedback from colleagues and friends
- Have a dialog with those who gave feedback.
It feels like Google has figured out a way to put collaboration at the core of document editing. They have managed to provide the look and feel of a document while providing the user experience of editing a wiki. Remarkable work.
When a colleague or a reviewer comments on your document, you get an email update. You can reply to a comment via email and the message gets embedded in the doc in the right place. This feature is beautiful especially when you view and reply to the comments from a mobile device away from the desk. I'll share more experiences in the coming days.