I'm not sure I'm convinced of the payment model... Charging for human interaction seems like a losing proposition... What's to stop a competitor from coming al

I'm not sure I'm convinced of the payment model... Charging for human interaction seems like a losing proposition... What's to stop a competitor from coming along, doing the same thing, but removing the cost? And what does the cost represent? Server drain? use of the drawing platform? there's gotta be a better business model out there... maybe you can integrate with amazon and make this a more general read-with-friends kind of thing and sell the reading pattern data (that seems like it would be valuable to companies like amazon or barnes & noble)...?