Joe McGinniss gets some free publicity. Dave Weigel, one of the few people commenting who has actually read the book, rolls his eyes:
The stories subject to debate here are rumors about the Palins that remain in the book as rumors. The stories of Trig Palin's birth and what Bristol Palin did or didn't do after her son was born appear as rumors, things that McGinniss heard but can't confirm, as opposed to the facts McGinniss gets through sources. The Glen Rice story, the newsiest item in the book, is confirmed cold. The stories of Palin affairs are put in the mouth, first, of a named source who's showing McGinniss around town — he elides the question of whether he believes them.
But if the Palins do sue, there is such a thing as discovery. Is she really going to pull an Oscar Wilde?