[fjtorres]

I suspect it will be something along the lines of a structured repository or catalog, organized by genre and subgenre, with relevant paid ads. That is how pirate sites monetize their "visitors" after all. The site might host author and/or publisher pages, reviews, and discussion groups as ways to keep users hanging around and boosting pageviews and ad revenues.
Payment might be similar to the Kindle Lending Library, with a fixed percent of ad revenues split among the book suppliers each month.