Do you think there is even a need to fight plagiarism?
I understand that content creators will be turned off if they see others profiting from their work but the community will detect plagiarism and act accordingly.
As long as content is still new to most of the community why should it not be rewarded for being reposted? I understand that etiquette teaches one to despise reposts, but I think the design of the platform allows original content to be rewarded most highly. Reposts will only be rewarded by those who missed it the first time around and so on until the community no longer rewards the content. A creator who turns out regular original content will enjoy the most rewards.
I think that having a bot say that the article is a copy even by marking it as a referral to the original would be useful to the community. It would be about as useful as discovering the original source of a trending news story.
Plus, I'm lazy. Out of the treding stories on the frontpage, they have quite a few copied articles where people say it's copied. I noticed that I just stop reading the content at that point and go for the next.
Yeah it would be nice to have a bot that flagged reposted content. Perhaps nothing more intrusive than that.