One irony: Harper Perennial says it invested $2,500 in Web advertising intended to drive viewers to the book’s Web site. But Mr. Roth-Ey estimates that only 1% of those who have seen the videos came from links for which the publisher paid.
One irony: Harper Perennial says it invested $2,500 in Web advertising intended to drive viewers to the book’s Web site. But Mr. Roth-Ey estimates that only 1% of those who have seen the videos came from links for which the publisher paid.