An advertising boycott against Fox News host Glenn Beck has succeeded in keeping most major sponsors from running commercials on his show even as the controversial commentator's viewership has grown.

Beck attracted 2.81 million viewers Monday, his third-largest audience since his show launched on Fox News in January, according to Nielsen Media Research data provided by the network. On Tuesday, nearly 2.7 million viewers tuned in, his fifth-largest viewership to date. And the conservative host got a plug from former vice presidential nominee Sarah Palin, who urged people to watch his program in a post on her Facebook page...

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