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One of the most important uses of a plagiarism checker would be for content marketers who actually order content from freelancers and other third-party websites as you need to be checking your order that has been delivered for uniqueness without which it would not be possible for you to determine whether you have got a duplicate content or a unique one. If you're looking for an example plagiarism checker then you might want to take a quick look at https://www.prepostseo.com/plagiarism-checker which would effectively serve your purposes.