This book follows a very specific format: After establishing the difference between a "Power Phrase" and a "Killer Phrase," in the first few chapters, it spends each proceeding chapter dealing with a specific situation (salesmanship, managment situations) and presents lists of "Don't say this" followed by lists of "Do say this" decorated in the background with pop psychology and old fashioned motivational stories, many of which could have come off an internet e-mail chain.
The principles here aren't bad, and I suppose will be quite helpful to some, though it seemed extremely "academic" to me. Essentially, this is another "rules to live by" book with a gimmick that's promised to turn your life around. And like most of these books, some people find it helpful, while others like myself are mightily underwhelmed. To be honest, the whole process of consciously selecting "the right phrase" out of a book for a given situation seems rather artificial to me.
All and all I'd probably be more generous in this review if I'd read it casually on my own time instead of having it thrust upon me as part of a graduate level college course. For that, I expect more than this.
But for its easy readability, and practical merits, I give it a three.
Just don't pay college bookstore price for it.