By Brian Howard | for Book Business 
Ah, two can play this game! There’s a lot of noise in the news feed  today about Barnes & Noble’s earnings report (share price down, but down significantly less compared to last year; retail sales flat; Nook sales up).
But what’s “interesting” (read: annoying, for journalists anyway) is that B&N is playing the same game Amazon plays with Kindle sales: Nook sales “doubled” over Black Friday weekend. But how many units does that represent?
B&N’s not telling.
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