Simon & Schuster reported $12 million in digital publishing revenue for Q1 yesterday, which is roughly a 233 percent increase over the previous quarter's $3.6 million. Included in the $12m are sales of stand-alone apps, e-books, and audio downloads. S&S has six paid iPhone apps.
Let's put this in perspective. Ebooks were about 3% of publishing revenues last year, and S&S is doing three times that much business.