Any site that offers to write papers for people whether it be a term paper, essay, or even a blog post must first past the test before they are allowed to write for the site. Each site has a standard for their writers. Each person who wants to work for these services is required to take an English test and to write a paper for the site. The site will determine if the person has the skill necessary to work for the site.
Basic content writing sites will take your order. You'll need to outline what you need and how many words the paper should be. The jobs are posted on the site and each freelance writer has the opportunity to select this job or not. The paper is written and you're given a copy of the work to proofread. At this time you can accept or reject the paper. You can also ask the writer to make editing changes to the paper. You are the one paying for the work so you need to be satisfied with the paper before you pay the writer.