In terms of privacy all I need is a ISBN of each book to add your books.

Preferably Sign Up and Receive a login as this site has SEO which could be beneficial for sales of your books.

The More information you provide the more beneficial your SEO will be for each account and book's will depend on Amazon's API and if that continues to work I can still add your books with each books ISBN. You will need to provide basic information and should fill in every detail required as you see fit.

If you don't have an ISBN then make a physical book using createspace.com an Amazon.com Company.

Also take a look at the sitemap this will give you an idea of what SEO the site actually has working and linking.