Startup Idea : More than book-funding!

It would be nice to have an online plattform for authors where they can publish parts of their work and let them review by the community. Any logged in user can like the authors work and comment if the author have activated this function. Behind the plattform is one or more publisher who can get in contact with the author if he has enough likes. They will work togehter to publish the book. Which means for the publisher he knows about the demands of the consumer before printing it. Not only these both parties gain advantage from that plattform. Members of the plattform, just normal consumers, as well can profit from. For example by bargein price or advanced publications. What do you think about that idea?