Cathy Langer

Now that electronic readers like Amazon’s Kindle and Barnes & Noble’s Nook have been on the market for a few years, long enough to become cheaper and more ubiquitous than ever, it’s no wonder that e-books have proliferated like mad.

Earlier this year, Amazon reported that its e-books for the Kindle were outselling regular books on its website, and Barnes & Noble shared the perhaps depressing news (for brick and mortar booksellers, anyway) that it sells three times as many e-books on BN.com as it does all categories of physical books combined.