Here is one of the places I thought I wouldn't have to worry about them 'as much' but lo and behold, I found one of my images, that was posted for critique, stolen and posted on another site. Sadly it was a picture of twins I had photographed that someone was claiming was their boys.....
So, just a note, even if it is not your final version, throw a logo on it. If nothing else, it may slow them down a little....