E-Book Boom Boosts Simon & Schuster

All of those Amazon Kindle sales–and, presumably, sales of competitive e-book readers from Barnes & Noble and Apple–have made an impact at publisher Simon & Schuster. The CBS unit says Q1 digital sales doubled over the previous year, and now represent 18 percent of the company’s revenue. Overall sales were up only 2 percent, to $155 million, but the higher margin on those digital sales means profits “more than doubled” to $7 million.