there are many such cases where moms working at home are providing good quality content.
even i have seen that teens going to colleges are working part time on internet and there are many having nice profiles on Scriptlance.
But as pringle said, there is a difference in a writer having knowledge of SEO and one just having an edge for being a US native writer. There are many writers from India and other developing nations who don't have a very good command over english, but still claim to be content writers. These are the people who are providing lower standards and causing issues over outsourcing to Asian nations.
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