More on NewspapersTerry Widener has been selling newspaper ads for 35 years. But until last fall, Ms. Widener, a 53-year-old saleswoman at The Knoxville News Sentinel in Knoxville, Tenn., had never sold an Internet ad. Then in a two-week sales "blitz" intended to test an innovative partnership between newspapers and Yahoo, she persuaded advertisers to buy $200,000 in online ads that ran on the paper's Web site and on Yahoo.