If you look at some of the other pictures this person has uploaded, you'll find all different sorts of watermarks from other people, as well as others commenting to show where the original is. I have no idea why this person has not yet been banned, almost their entire gallery has been proven stolen and none of it has been brought down yet.
This was the second time in a month, somebody hinted me, that the person, whose picture I liked has stolen art. I dont know what these people are thinking what they do? Yes, i wonder too, why they not have been banned yet. In the future I will be more careful. (although looing through all or most of the other pictures mostly is a lot of work^^)