This is basically a series of essays in which Cintra Wilson (a regular columnist in Salon and the Huffington Post) uncorks on celebrities and the celebration of fame. Her writing is biting and cruel and wickedly funny at times, but reading an entire book of it is tiring, like watching a really loud, flashing music video play over and over with little variation.
To the degree that she's trying to make a serious point, it is that fame unhinges everyone, especially the famous, but also everyone else who dreams of fame, or at least touching it. Each chapter is just more ranting on the same theme.
It's vituperative and funny, but better read in small doses as a blog than as a book. Also, it's ten years old, so big names she skewers are already fading into has-been land.