By JANET ADAMY The Wall Street Journal November 16, 2007 Average customer traffic at Starbucks Corp.'s U.S. stores fell during the company's fourth quarter for the first time, a sign that the Seattle coffee giant is having difficulty attracting customers as it moves into the holiday season. The company reduced its earnings and same-store-sales-growth estimates for the coming year. Starbucks planned to launch its first national television-advertising campaign today. In an interview, Chief Executive Jim Donald called the campaign "a very culturally sensitive, product-driven" effort. He said Starbucks is getting into TV advertising because "as we grow our stores, we're trying to reach out to this broader audience that maybe [has] not had a chance to experience Starbucks." Chief Operating Officer Martin Coles said the ads highlight factors that differentiate Starbucks from rivals. The spots are part of Starbucks's holiday/winter campaign and feature ani...