Stick a fork in her?

So is Sarah Palin really over? Has her 15 minutes expired? Politically, almost certainly. Pop-culturally -- well, maybe. But at least one leading indicator -- book sales -- suggests the Wasilla Wonder is fading fast. According to Amazon's rankings, Joe McGinniss's The Rogue has nose-dived to 964 among top selling books; ex-Palin aide Frank Bailey's Blind Allegiance is at 25,105, and Geoffrey Dunn's The Lies of Sarah Palin is at 40,973. Book sales by Palin clan members are equally grim. Levi's Deer in the Headlights, last seen at 11,291, is definitely headed south. Bristol's Not Afraid of Life at 104,035, is also in free fall. And Palin's own tomes? Her latest, America by Heart, is at 22,622. Her previous book, Going Rogue, disappeared into a black hole long ago. It's currently languishing at No. 568,389, the worst of the lot.