From Book Riot:

 

Want a chance to win $100 to your favorite bookstore? We're hard at work putting together our next Quarterly box, and we want you to spread the word. Spread the word about our Quarterly box, and you can enter for that $100 of great bookstore money. All of the (easy!) details are here:http://bookriot.com/2014/06/29/quarterly-giveaway-win-100-favorite-bookstore/

 

Source: http://bookriot.com/2014/06/29/quarterly-giveaway-win-100-favorite-bookstore