There is a bit of a dark cloud to this silver lining, at least for the booksellers. BookStats notes that e-book sales jumped about 10 percent to 512.7 million copies, but revenue was flat between 2012 and 2013; it may have been lower prices that triggered a surge in demand, not a renewed interest in going digital. With that said, researchers warn that their data doesn't include books without ISBN numbers, so quite a few self-published e-books may have slipped through the cracks. Even with that wiggle room in the data, it's evident that there's a transition underway -- you just shouldn't expect to see the corner bookstore disappear overnight.

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