I can guarantee you there are well known quotes in this forum that lack a citation that no one noticed, but that's not the issue. Nor is it a problem pointing out that a lyric or quote lacks a citation. And it is not a problem pointing out a mistake, or a wrong assumption. Like @ChickenFreak, @minstrel thought I was arguing about the rule, I wasn't. That was the mistake of his I was referring to. Hunting for wrongdoers because you expect to find them is the problem. Assuming people were trying to claim credit for someone else's work was the mistake. Why not just ask the person? A simple, "I would have appreciated...", or, "Where is that from?" is a reasonable reply. What's with this presumption of guilt or whatever the need is to find wrongdoing? Does anyone have any reason whatsoever to think forum members are plagiarizers until proven otherwise? I made a wrong assumption that everyone knew a very common lyric or would at least recognize it was familiar. I didn't ignore a rule, and as I mentioned in the thread, I probably post more citations than anyone on the forum, so it should have been obvious I wasn't ignoring a rule. Don't you think someone who uses citations in their posts on a regular basis knows that they are supposed to be there without a lecture? I read a lecturing attitude there and you later proved me right: With a new forum member, did the inquiry have to include an accusation? That forum member didn't present that paragraph as their own. It was falsely assumed. You don't need a plagiarism checker to find the source of a block of text, unless plagiarism is what you are looking for, hoping to catch some evil forum member in the act. All you need do is search a string of text in quotes. The fact you are using a plagiarism checker should tell you something.