As a methodology and philosophy - very strong. As a book however relatively very weak. I am a strong believer in the philosophy and methodology and hence the book is important for me - but I really think Reichheld needs a new version with lots more examples and lots more discussions. ( )

This is the book through which Reichheld conveys the story behind his Net Promoter Score. Bain and Associates did research to determine which of several potential questions best relate to increased loyalty. The winner: On a scale of 0-10, how likely are you to recommend [company] to your family and friends? The "net promoter score" is the percentage of promoters minus the percentage of detractors. The approach proves itself empirically, as companies across industries show correlation between between NPS score and growth. The methodology includes recommendations for transparency, understanding the target audience, and a solid cycle of using surveys, backed by follow-up, action, and insight in a closed-loop process. ( )