It turns out that people prefer the free stuff that really just click and download and ...... abrakadabra, enter the desired goods that enter into their computer without doing anything. Really nice ....
I learned or rather to experiment with directing my blog, from which is totally free to the free but very little effort. 

From the beginning of this blog I have provided autocad block which is completely free, just click done. In this way, this blog received an average of 9-15 visitors per day. After I change from completely free to free with little effort, the visitors began to leave this blog .....:-). That was not ordered to pay, only the mutually beneficial cooperation with each other. And they are getting money from small business. But their faces turn away ..... who knows what they were thinking. 
I would observe about a week ahead ..... If they wants only what is absolutely free without any effort ...... maybe this blog will be stagnant path or may die miserably after their ancestors.
And maybe I'll try to find another way to penetrate this virtual jungle.
This conclusion while I was on the statistical data of this blog.