It happens thousands of times per day in America: a shopper walks into the supermarket, leafs through the store circular to find discounts on products, and, fingers smudged by newsprint, sets off to shop, often with the circular in hand. But while the paper circular – whether delivered by mail, as a newspaper insert or viewed in the store – still reigns as the most popular way for shoppers to find sale items and product information, it is evolving in kind with consumers’ desire to seek deals across media.