I hope your comment wasn't a direct response to mine. If it was, then I am guilty of being too abbreviated in my comment. I don't use water marks. I agree that they deface the image. I use an unobtrusive by-line. And all of my images have a creative commons copyright notice in the exif data, which is very much along the lines of the photographer whose link you posted. I've seen lots of my images used all over the Internet without my permission. I've never issued a DMCA e-mail for any of them. My big concern is that somebody might be tempted to use one of them to generate revenue and not give me a fair portion. And I don't want to spend time hunting down this kind of mischief. That's why I post low resolution images. It keeps me from having to scour the Internet with Tin Eye on a regular basis for every shot that I think has commercial potential. And the 700 pixel shots look pretty good. I've been contacted by museums, researchers, and graduate students who graciously request permission to use some of my images. In support of science, culture, and the arts (and, yes, to get my stuff out there), I have sent them the high res shots pro bono. One time a Fortune 500 company wanted to use one of my shots in an advertising campaign. They paid. I wonder if I would have been faced with a disagreeable incident similar to what Trey Ratcliffe reported with Time if I had posted a high res shot. I think my approach is pretty practical.