Must be something wrong with me. I have all kinds of book ads in my feed. However, of the three I picked, one wasn't a book. I just liked it. The first one was oversized, brightly colored, and had an interesting composition of items. The second one, the non-book, was also oversized and while only two color, it had great contrast and fit the product perfectly. If only I could make my ads do that.. The third one, could have been good-oversized, brightly colored, but(to me) badly cramped or overcrowded. I didn't know where to look (so I would have passed).