The author obviously knows what he's doing, for the types of businesses that he's bought or built. But overall I felt like the book was too narrowly focused on small niche opportunities. It constantly bangs on about how an entrepreneur should aim low, since there's less competition, and marketing to narrow niches is a lot easier. As if that's the maximum that can be achieved by bootstrapping, i.e. not taking VC money.The problem is, that's simply not the case. Bootstrapped businesses can grow to millions of dollars in annual revenue, if the right product is chosen, when a new market opportunity opens up. Instead of building scheduling software for countertop installers (the book is full of these sorts of examples), how about building software that exploits some new and growing market, like smartphones or social media? Yes of course these areas are full of VC-saturated startups, but that doesn't mean you can't be smart about finding a product or service that costs you little to provide, is of significant value to your customer, and will spread naturally through word-of-mouth or network effects.So... read it for some good tips on email marketing or outsourcing. But don't follow it as gospel. Big dreams can come true!