Yahoo CEO Mayer has advertisers' attention, but can she get their dollars?

By Jennifer Saba and Alexei Oreskovic NEW YORK/SAN FRANCISCO (Reuters) - Three weeks ago, Yahoo Inc Chief Executive Marissa Mayer strode into a Manhattan hotel and was greeted like a rock star by hundreds of advertising executives who snapped pictures as she sat down for an interview with journalist Charlie Rose. That same audience a year ago would have been grousing that Mayer had not done enough to engage Madison Avenue, which is arguably Yahoo's most important constituent since the Internet company derives more than 75 percent of its revenue from ad sales. ...

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