When you create a work, you do technically have "copyright" over the image. But you do need to pay to have it realized by the Copyright Office so that you can actually prosecute. Which is why I say I doubt very many people have paid the 35-40$ per photo to have their work [i]truly[/i] protected. But that's not really something the forum needs to be looking down the barrel of what few times it does happen. It's much easier to just remove said art.