Unfortunately, I don't have to worry about anyone benefiting from stealing my work! But I post reduced photos and if I think something's really good, I hold off. And if I think it's borderline good, I add a copyright notice to the "file info" in the forlorn hope that if someone is sloppy enough to steal, he/she's sloppy enough not to check the "file info."
The fellow in this article is a flagrant example of an intellectual thief, but too many people just don't seem to understand that if it isn't their work they should credit the "author." Even nice, decent people seem to have a blind side to this when it's on the web. In another group I'm a member of, someone justified posting someone else's work, when called out, by the argument "I assumed everyone would know I wasn't good enough to produce this." Facepalm!
As a side rant, Plagiarism is a problem everywhere. Maybe it's because I come from an academic family, but I just don't get it. I'd forgive my husband for cheating on me before I'd forgive plagiarism. Yet, I had a friend who was an English professor at the university level. He had students turn in papers with long passages where they had taken their source's work and just changed the vocabulary, leaving every thought intact. When he confronted them, they told him their coaches had told them that was the way to write papers.