As a novice in the recruiting/headhunting industry doing research for a business plan, I found this book to be very informative. It has input from a lot of real time headhunters, so you get to understand how they work on an industry level and on a day to day basis. However, in spite of vast research the authors have put into this book, most of the research was carried out in mid nineties (although the book was published in 2002) so the word "internet" comes up only twice (or a few times) in the book. One gets an impression that the resume/candidate database is one of the most important assets for a headhunter, but I wonder to what extent that is relevant given that a few resume databases such as monster, careerbuilder, hotjobs (some of these sites are mentioned only once or not at all) will give anyone access to a greater number of resumes' than someone who has been in this business for a long time and relies on the resume's in their own database.
But, is in any industry, certain things always remain the same, even with the influence of the internet, and this book does a great job of shedding light on how headhunters work in the marketplace.