You are obviously referring to the customers who actually are interested to gain some advantage from doing this. There is no such thing as "free" and if it is, you are probably the product. There is not ONE single tutorial or free product out there who does not have a monetary scope starting with the ads you click on that page and finishing with a derived product that could produce revenue. You can wait until the greek calends and it will not change the fact that what matters to developers is the money coming into a back account. If you are one of the people who call themselves a true help provider, then you probably have a lot of debts or you are simply retired and have absolutely nothing else to do in your life.
