As E-book Sales Explode, Consumption Patterns Change

Book2Book -Thursday 24 Mar 2011

Readers tend toward a favorite author, category, personal recommendations, or flap text. Thirty percent of books are still discovered in the brick-and-mortar bookstore, but many are then purchased in e-book format.
The discovery model for publishers on e-readers is shifting; people buy a narrower set of books, because they have no idea what's out there. They need a new way to discover books, but brick-and-mortar stores are still the best advertising.

Business Week