Jan Kanclirz, my technical editor, was extremely helpful in strengthening different aspects of the book. It is a great benefit to having multiple inputs into any project, especially a book. Everyone tends to get myopic when working on a specific task, which is why I promote a more agile approach to projects, not just writing books.
What are your future plans? Any new books in the works?
I am a big believer in giving back to the hacker community, and plan on writing more, offer more security training classes, as well as expand on my current Open Source projects. I feel that hacking in general, and penetration testing specifically, are worthwhile causes that need more positive media attention. We'll see what comes of that in the near future.