I have found an ebook on http://www.seatmaps.net, entitled "Fly for Free". The author promises clues on how to fly for a lot less than what you'd normally pay. Just wanted to ask whether anybody


a) has subscribed to it
b) thinks it's worth its money

I am usually rather sceptical about these things and would appreciate any input before I decide whether to buy it.

BTW: The link doesn't always seem to be there. I found it on the right side of the website, usually it is at the bootom.