Since they already have a vast collection of author contact information, and they already send obnoxious amounts of e-mail, why not advertise an author's book to other authors?
Writers tend to be readers. PA would sell books without shifting their in-place economy, and then their customers would at least reach a limited audience.
Writers tend to be readers. PA would sell books without shifting their in-place economy, and then their customers would at least reach a limited audience.