No. 1 retailer has decided to abandon its generic 'Happy Holidays' greeting in favor of 'Merry Christmas.' NEW YORK (CNNMoney) -- Wal-Mart has told its employees that it's OK to once again greet shoppers by saying "Merry Christmas" this holiday season instead of the generic "Happy Holidays." CNN confirmed that Wal-Mart will announce Thursday that it plans to use the phrase "Merry Christmas" in products and around its stores this holiday season. The announcement comes a year after religious groups such as The American Family Association and The Catholic League boycotted retailers including Wal-Mart last holiday season for excluding the...