Slog Tipper Joe shares this link about a comic book artist whose book was pirated by 4chan and then saw his sales go through the roof. The piracy did more than a positive review at Boing Boing to help sales of his book. Here's a sales graph:

On the other hand, Slog tipper Jason sent along a link to this video of young adult author Jackson Pearce responding to book piracy by making a YouTube video involving a hand puppet. (Short answer: She's very against it.)