The day after Thanksgiving has become America’s wildest shopping day．Closed all day on Thursday, chain stores all across the nation open early on Friday．Some stores open at 12:01 Friday morning, while others open at 4 a．m．From Friday to the day before Christmas, this is the season when businesses make as much as 25 percent of their yearly profits．This season puts many businesses “in the black”—that is, into profitability—for the year． Reporters from local TV stations interview people who camp out in front of stores a day or two before the doors open on Friday．These peop