I enjoyed this book, but having read some Wiseman before, it all seems a bit familiar. (Although the style seems a little more humourous than usual, which might put off some people seeking a more sensitive approach to the subject)
Predictably those convinced by parapsychology have attacked the book, (the sole reason for most of the one star reviews) however all the mountains of peer-reviewed research 'proving' parapsychology phenomena have a a habit of disappearing when one goes into the details... so I am on Wiseman's side in this debate - but that is my problem. Wiseman promises us not a re-hash of the old 'is it true or isn't it' debate but psychological evidence as to why and how people are so easily taken in. The book does this in places, but in fact a lot of space is taken up by the old debate on the existence on parapsychological phenomena. If you have done any reading on this topic before, large swathes of the book will already be familiar to you.
When Wiseman does use psychological explanations, more details might be useful - psychological explanations have a habit of sounding rather tenuous or so obvious they could be used to explain anything (an unfair perception, but not necessarily helped by Wiseman occasionally recycling data from previous works). This issue is not restricted to Wiseman or hot debates such as this, but it means a lay audience may need more convincing that a psychology experiment is really the best explanation for certain phenomena.
IN summary, if this is your first foray into this area, this is an excellent introduction in a light readable style, if you need more convincing, further reading is recommended