I bought this book as a pastime, and I have to say that it's been a very good companion indeed, on the plane and on the train, so it perfectly met my needs. Said that, we have to recognize that it's more some sort of a literary joke than a real work of art. Overall I have to admit that it's much more consistent than I thought at first. If you consider that it was written by 15 different people, it's even amazing that they succeeded in putting together a story. Or, at least, kind of, because at a certain stage (I'd say roughly the middle of the book) you start realizing that the authors are really making fun of you, and there is not such a thing as a story, not in the common sense of the word. "Reading it is rather like watching a group of old friends get very drunk together" says the Daily Telegraph, and that's absolutely true. So forget about the story, forget about the possibility of finding a plausible solution to the plot, and just enjoy the eclecticism of the whole experience, so to speak. Every author gives his or her personal touch to the picture, and that's also a pleasurable way to discover writers you might feel eager to know better.
And of course, do we not forget that the novel was born, first of all, as a fundraising project to support Amnesty International!