For most photographers, seeing their photo on the cover of a book should be a highlight of their career. It's the cover that does the selling so when a publisher decides that their image is powerful enough to attract attention and pull in buyers, it's a sure sign that they've take a great photo. They'll be able to see their picture on the shelf every time they walk into a bookstore, enjoy the feeling that customers are placing it on their own bookshelves and the remuneration should be nice too. It doesn't always work out that way though. Now that images are available on microstock sites, photos are appearing on book covers without photographers being aware of the sale, without being credited for the picture and without receiving pay that would even cover the price of a latte in Starbucks.