A CNET article reports that retail keyword prices increased 9.4 percent in the weeks after Thanksgiving (the article doesn't provide the actual timeframe), helping to lift overall keyword prices in the fourth quarter, according to a report released Monday by SG Cowen & Co. The average cost per click based on keywords searched rose 5.8 percent overall since the Monday after Thanksgiving, according to the report. Automobile (8.3 percent increase), finance (4.0 percent) and travel (3.5 percent) sectors contributed to the increase.