Is Calorie shifting a viable dietary strategy?

I ran across some references on the web about a diet strategy called
calorie shifting. According to this site http://ironzipper.com you
can lose a lot of weight very quickly by using this so called Calorie-
shifting technique that allows you to fool your metabolism.

What are the side effects of this approach? Does calorie shifting
deliver results as they suggest or is it all just advertising? Has
anyone tried this type of diet and what is your opinion of it if you
have.

Thanks.
.