50 Shades of Green: Erotic novel boosts Barnes and Noble sales

Barnes and Noble has an erotic novel to thank for a recent boost in sales.

America's demand for the “50 Shades of Grey" trilogy helped Barnes and Noble post better than expected quarterly numbers, but the book chain's CEO won't share explicit details only telling analysts the books by E.L. James had the biggest impact on the numbers.

In addition to the spicy trilogy, two other factors helped the book giant.

Its competitor Borders went out of business last year and the Nook e-reader has increased the company's digital book sales.

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