If you saw someone posting artwork that clearly wasn't there's and didn't/refused to give credit back to the actual owner? I've been running into a lot of people copying/tracing artwork from a doll maker for MLP and not giving credit back to the actual creator, but claiming it as their own. One person even said that they won't do anything until the actual person talks to them. Chances are, this person isn't aware their art is being stolen/copied/used without credit. I only know the person have a deviant art account, and that's about it.

So, what would you do if you knew someone was stealing artwork?