It makes some sense in theory. In practice, she's so incoherent and devoid of any knowledge of any issues, including energy, that she could barely sustain interest past a few minutes. Say what you like about the rabble-rousers of the radio right, like Medved, Levin or Limbaugh. But they're nowhere near as uneducated and as inarticulate as Palin. Her job is as a hood ornament for neocon manipulation of Christianist voters. She can't actually argue. As Kerry Golds points out:

[I]f radio becomes a reality for Palin, it seems likely that any calls she takes from listeners will be screened heavily.