What is the crowd's opinion of PlagiarismCheck.org?

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I 100% agree with you, I wanted to LEARN and to see MY mistakes, good or bad marks meant nothing for me. Talking about reasons why students simply copy and paste, may be that happens because of lack of time, constant fatigue? I am not trying to justify them, no! I just remember myself being a freshman, I was always exhausted, couldn't manage with all of my duties. I just wonder, why they even don't try to hide this lol, I mean synonyms, paraphrase, words' order changing could hide the fact of plagiarism rather effectively. As for the plagiarism checkers, there are lots of really decent tools , no need to google paragraphs anymore, just insert a part of a text (or a whole text) in one of them and see the result.