How many e-books are being read?
Amazon introduced the Kindle in 2007, but it wasn’t until Christmas 2011 that sales of e-readers and tablets began to soar. Amazon, Barnes & Noble and Apple all reported huge increases in sales of digital reading devices during the 2011 holiday season. Apple sold 15 million iPads in the last three months of 2011, and Amazon sold more than 1 million Kindles each week in December 2011. A Pew study reported that the number of Americans who owned one of these devices nearly doubled from 10% to 19% between December 2011 and January 2012. In the United States alone, e-book sales rose 177% in 2011, generating revenue of nearly $1 billion.