With a few exceptions, web design and software books typically become obselete a few years after publication. My books likely fall into that category at this point, nonetheless, I am proud of my past work. My average Amazon rating was 4/5 stars, which I'll take, and the Dreamweaver CS4, CS5 and CS6 series sold well over 50,000 copies and was used as college textbooks worldwide. Writing takes a lot of time and effort and while I wouldn't rule out authoring another book in the future, the topic would need to be a compelling one!