Review:
This is all about is using 'link roundup' within your niche to do a more advanced version of guest blogging, but in a much simpler and easier process. All you have to do is write one, kick-ass, article to get the traffic.
There's a good section on writing such an article too.
How effective this is I don't know. It's not as powerful as guest blogging, but there's a twist at the end of the book that combines link roundup with guest blogging that's a cunning strategy.