Didn't see this posted, so here it is:
http://www.nytimes.com/2013/05/27/bu...r=yahoofinance
"One-day discounts are part of the answer. Promotions like the Kindle Daily Deal from Amazon and the Nook Daily Find from Barnes & Noble have produced extraordinary sales bumps for e-books, the kind that usually happen as a result of glowing book reviews or an author’s prominent television appearances."