yeah, the focus is on collaboration and creating a change history and annotations, not collective rich text editing. And you don't need a google (or any) account to use it. If you want to get non-technical people to help, they don't have to bother with any signup shenanigans.
Seriously I was just thinking about writing an app for quick sharing like DoingText. Nice UI - simple and easy to use. The only thing it does not do is synchronize between browsers (e.g. change from one client does not reflect on the other client until the page is being refreshed).
