Amazon announced third quarter sales after the close of the market on Thursday afternoon, missing analysts’ expectations on both sales and earnings and disappointing on guidance for the next quarter as well. The stock dropped sharply in after-market trading Thursday, down over 11 percent (or $35 a share), though in regular Friday morning trades the decline has been less severe — down about 7 percent or $21.50 a share. Amazon’s sales still grew by 20 percent, to $20.58 billion (though as we reported earlier in the day, analysts were looking for $20.84 billion) and the net loss of $437 million (or 95 cents […]