It’s the dark side of the media sensation book tour: the disappointed fans who, in the age of YouTube and blog comments, have louder voices than ever. Liberal blogger Kevin K. at Rumproast has video and angry comments from Sarah Palin fans. One angry comment: Went to the book signing in Noblesville, IN. Waited three hours in the cold to get a wristband to reserve my spot at the book signing tonight. We were told she would sign book for the first 1000 people. Not so. The event ended promptly at 9:00pm, though there were still at least 150 people...