I have a great deal to say about the A To Z Cash System - including why you should AVOID it. I just did two posts about this scam:
On that page you'll see so many red flags it will make your head spin, including fake testimonials, invisible text, and one of the most dangerous Internet traps going today (the "Free" phone consultation).
It's also being promoted by a fake blog called "Sophies Blog" which you can read about here.
You might want to start by reading these red flags.