Never in my life had I read that "Self-plagiarism", that is, if I have another user in a blog, I have to place the source, even if the author is myself? That's crazy.

I think the reason that people take responsibility for the work of others here in Steemit is only for monetary reasons, it can be for hazing or dishonest intentions. I think we will not look at this kind of thing until they plagiarize us and we're in that situation.