Not too long ago I've come across one article which I believe you can find interesting. Someone may take a steaming dump all over it, but it clarified some of my questions.
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consteco.net/2017/03/21/essays-writing-services-making-any-job-much-easier-9/
fee.ptithcm.edu.vn/2016/04/outstanding-resolution-for-all-of-your-writing.html
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busanseniorexpo.com/2016/04/09/custom-essay-writing-services-are-perfect-136/