[Wal-Mart] Wednesday said it would start its Black Friday and holiday pricing early on some items, in a move to drive sales during the increasingly competitive holiday shopping season. Wal-Mart, the world's largest retailer, said it will offer Black-Friday prices three weeks early by unveiling "secret" in-store specials. The company said it will offer discounts on five popular gift items. Wal-Mart plans to reveal discounts on its Web site on Thursday. The items will be available in stores beginning Friday morning, Nov. 2 as it officially opens its special Christmas shops. The day after Thanksgiving is one of the biggest...