Hi moystard - please do drop me a line (email in profile, or feedback@freelancedeveloperbook.com) and I'll see what I can do in terms of answering other questions. Some stuff will be too specific to be relevant in a book, but other stuff will may be worth adding. Also, the Stack-Exchange-style Q&A site I'm setting up (questions.freelancedeveloperbook.com) might become a handy resource for you and others (once it's live!)

Steve