Riffle: Read any good books lately?

Even though I have an enormous stack of unread books beside my bed/on my Kindle, I'm always searching for new titles to delve into.

Goodreads has been one of the best spots for book recommendations for years, but a new site aims to occupy the space as well, borrowing from Pinterest in concept and design.

Riffle started a few months ago and has attracted several bloggers and experts who are more than...