After trying to read reviews on other websites about whether this e-book was worth buying, I finally decided to get it. The sample chapter scared me off because it was all recycled stuff. There are tons of typographical errors and a few factual ones in this book. In general, there is a lot of recycled material in the book. Fortunately it comes from a wide variety of sources, including things that were only published on websites. I'm happy to say that there is definitely a good/decent amount of original, new information from interviews in this book that I haven't already read in DMSR, The Vault or the many other books and magazine articles I've read over the years. If you want to read everything there is to read on the subject, you will definitely want to get this.