What is Book Spine Poetry? Book spine poems are created by stacking books, then reading their titles as though each were a line of verse. This poetic form is known as a cento. What is a cento? According to Wikipedia: A cento is a poetical work wholly composed of verses or passages taken from other authors; only disposed in a new form or order. My Book Spine Poem It took a few months of inspiration ping pong between me and Nicole Rivera (@riverand) before I finally got around to stacking some books and snapping a photo. I don’t know why…