ANOTHER UNIT CITATION FOR THE RETAIL SUPPORT BRIGADE: Early Data Shows Strong Black Friday. “Sales during the day after Thanksgiving rose 3 percent to $10.6 billion, according to preliminary figures released Saturday by ShopperTrak RCT Corp., a Chicago-based research firm that tracks sales at more than 50,000 retail outlets.” Thanks, folks: You may have saved the economy! The only bad news is, the discounts may not be as deep after this weekend . . . .