The concept is good but the website is not mobile friendly. I would love find a book but apparently there is no search book functionality. Also it would be nice to view details and comments about book when I click the cover thumbnail, right now it takes me to amazon which somehow feels like promotional.
The title of the book will take you to the book's page.
Maybe I should add a label on hover to indicate that the book cover goes to Amazon, the idea was just to have quick access if you were interested in the book.
And yes it's not mobile friendly yet. I figured the HN crowd mostly browsed on desktop so it would be fine for now (maybe I was wrong)