The AAP’s monthly StatShot shows that children’s books stayed solid in April 2012 compared to April 2011, with overall sales up 24.3 percent, according to the 20 publishers reporting. The only soft category was board books, down 14.9 percent, while hardcovers were up 42.8 percent and e-books were up 24.3 percent. Recent surveys indicatethat e-book sales for the YA category are being fueled by readers who have aged out of the teen demographic. As long as these adult readers are contributing to the bottom line, we see no reason to check their ID.