I am surprised at other people's comment here and how people don't seem to understand plagiarism is wrong. I am pretty sure no plagiarism is one of the rules when signing up. I guess one problem may be they are not realising what they are doing Is wrong since in facebook for example you just share whatever you find interesting from the web. I wonder if there is a solution to that...
The problem is no one is flagging and SteemCleaners can't keep up with the garbage not to mention they have a lot of strings attached to what they can actually deal with.
I think as one other reply suggested, people fear retaliation from flagging. That's why people turn a blind eye on it.
I don't think you understand what plagiarism is. Plagiarism is passing off someone else's work as your own. That isn't what is happening here.
I understand what plagiarism is, and you are right, it is not straightly plagiarism. It is still not original content as steemit is intended to be. Sharing and reposting for profit is very different concept.
What is your source, for saying that SteemIt is supposed to be about original content? According to whom?