"Well-produced, valuable content on a website has a gravity that can suck users in with great force. When people find something on the Web that's exciting, they love to be the first to introduce others to it. Perhaps it's ego or maybe it's altruism. Combine this fact of human nature with the inherent connectivity of the Web and you have a recipe to unite a large number of people around your website."
A comprehensive look at search-friendly practices with a good dose of how web standards and accessibility can affect rankings and user experience.
I'm familiar with most of the material covered in this book; however, a few additional tidbits of less commonly addressed subject matter made it worth grabbing.
I'd recommend this book to search marketers that want to shed some light on the front-end development side of SEO. Web publishers will learn the benefits of manually coded, semantically rich, Web standards compliant sites that do equally well with people as they do with search engines.
If you want to get know more about Aarron Walter's work philosophy, check out this great interview.
Guys like this help make up for all the snake oil salesmen that equate SEO with the dark arts.
This book covers a staggering array of topics around helping people find, use, and return to your website. I'm generally pretty cynical about SEO, but this book starts from the correct perspective - you have to have great content that people will want to find. It then builds on that concept by providing tips on everything from creating search engine (and user) friendly urls, to minifying your css to slightly reduce load times, to setting up email newsletters to keep sending content out to your users. I think this would be a worthwhile read for people of all skill levels, even owners of websites who don't know anything about code (there are some code heavy sections, but you could always skip those).
I found the Building Findable Web Sites: Web Standards SEO and Beyond extremely informative and helpful. I find myself regularly opening it up again as a reference book. It is well-written, contains great code examples, and is easy enough to follow along with.
Disclosure: I have taken several classes with Aarron Walter as my professor at the Art Institute of Atlanta.