Amazon has long had policies that prohibit various kinds of erotica (stories that sensationalize incest, rape, pedophilia, etc.), but some other online booksellers have been lax. Today, many erotica authors published on Nook found their books deleted and their accounts terminated. Some say their books have been selling on Nook for years and they were never notified of a content policy change last week. Link to full story in Publishers Weekly: https://goo.gl/u5eUpn