You'll find lots of books on website technical design, but very few on building a website that accomplishes your company's marketing goals.
Most websites fail for predictable reasons.
Of course, such a view is stereotyped and a bit doctrinaire. The core of Parker's book is to show how each step of the Customer Development Cycle can be implemented on a website, harnessing each portion of the site to serve a deliberate business purpose, rather than thrown together to emulate another site. Here is where the book can help any website, planned or in place. Introduce your business to the visitor and obtain an e-mail address. Meaningful content and credibility enable visitors to compare your product or service with those of competitors, while you learn more about visitors' needs and qualify them by their degree and type of interest.