"First, as everyone will tell you, a book jacket is a poster. It will be (if you are lucky) face out on the shelf in a bookstore and it needs to sing a siren song to anyone walking by. It needs to crook its finger at the buyer. It needs to wiggle its beautiful rear. It needs to seduce."
Read this wonderful post from the empress of children's literature, Jane Yolen, discussing the finer points of book jacket-ry!
quote taken from "http://janeyolen.com/interstitial-moment-33/"