i read it ,but i have some questions what about free articles websites,arn't its whole content be dublicated by the other websites that benefiting from its services?
Yes, which is why you shouldn't publish the articles you give them on your own websites. Do you have anything specific your worried about?
Ye always want UNIQUE content on your site. Don't write? Pay some one whom does. Some info on Duplicate content issues SNIPPET and Read the rest of it - should help get U going M8