Best Buy was particularly aggressive when it came to Black Friday discounts and promotions this year after dropping the ball in 2010. The company's door-buster deals, which rivaled that of discount giants like Amazon ( AMZN), Wal-Mart ( WMT) and Target ( TGT), were praised by analysts, who expected these sales coupled with midnight Black Friday opening to propel third-quarter results. But Best Buy failed to deliver to investors as well, reporting last week a 29% plunge in third-quarter earnings, with gross margin falling by a percentage point. The discounts ultimately pressured the bottom line and did little in the way of revenue, with same-store sales up just 0.3%. Best Buy shares were up 1.8% to $22.97 in afternoon trades. Year-to-date, the stock has lost more than 30%. - Reported by Jeanine Poggi in New York.