There are a lot more than anyone could possibly know. I've been on quite a few boards that are survival oriented and there are a lot of readers that don't post. They read what those in the know have to say and then they do it, whatever IT is. Their way of preparing for an uncertain future.
All I had to do was talk to my Great Grandma and my Dad. They had it all figured out from the last depression, WWII rationing and the dustbowl era, when the central plains states had their severe drought. They both told our family from the time we could walk, that if it could happen back then, it can happen again. Then I joined the boy scouts and they just re-enforced the "Be Prepared" mindset. Then, when I started browsing the net and started seeing so many preparedness sites popping up, I knew something was amiss and sure enough, here it comes, in one form or another.
I'll keep my guns, freedom and money. You keep the *change*.