Typos

I've been leafing through Charles E. Brown's The Essential Guide to Flex 3 lately. At the very start of the book is an 'About the Author' page. The page ends with 'Charles can be contacted through his website, a continuous work in progress, at www.charlesbrown.com'. However, www.charlesbrown.com does not look like the work of an author with expertise in Flex, Flash, Dreamweaver, ActionScript, etc. After some detective work I realized that http://www.charlesebrown.net is the true homepage of the book's author. I can only imagine the author's reaction when he noticed the typo.