It is proven statistically. This is very ancient method and many people know that big numbers have their magic influence on people. They know how to sell, does not matter what. That's how they make their money. Money does not smell.
Nobody sells secrets that make money.
I can continue this, but I do not want you to get bored and skip my conclusion. I spent a lot of time and money trying and analyzing all those ideas, concepts, theories, methods, and tactics, whatever you name it. The rational part of each of them can be taken in consideration. I have found out what is wrong, what is right and what is the suitable proportion of them can be used efficiently. Do not expect the results earlier than 6 - 8 month from the beginning of your participation.