Find books and authors

For those of us who love books, we cannot have access to too many sites leading us to more books to buy, borrow, and read.  I easily found a nice site today, "Book Browse" with a collection of links to author websites, which is what I originally wanted.  It has a tab called "Find a Book" though which allows you to find books based on categories such as "genre," "setting," "time period," "award winners" and a few others.  This is a nice feature if you know what you like, but do not know what to read next.  I can freely admit, I never have this particular problem because I have shelves full of books I have not yet read waiting for me to have time to give them some attention.  The site is clearly a professional site with many other features than the ones I have highlighted and is worth exploring.