I was tempted by this from an excerpt I saw on the web. Sadly, it follows the usual pattern of business books: an interesting idea that could be explained in a couple of pages, expanded by means of much repitition and many almost identical anecdotes, to fill a complete book. The idea is sound enough: don't build a plan and then execute it slavishly, thereby ending up with a product nobody wants. Instead, find yourself some customers early on, continuously get their feedback, and be prepared to reinvent your product and company, possibly several times. There, I just saved you the purchase price. All the examples are drawn from Web 2.0 type businesses, and the title should really be "The Web Service Startup Owners Manual". Web-delivered services, such as social networking, lend themselves very well to continuous revision - there is no deployed software to update, and changes are cheap and easy. This of course is why such companies are so fashionable amongst VCs. The concept is much harder to apply to a traditional software or infrastructure company, and pretty well impossible with hardware or silicon.