I do think it's presumptuous of a new poster to take on a long-time LuLa contributor over a matter like copyright marks...but I have to say, I don't like them, either. I think they look cheap, and they don't provide any real level of protection. If you want to steal the photograph, you can take the copyright mark off in what -- 10 seconds?-- in Photoshop. Also the photographer has a natural copyright whether or not the copyright mark is there. The mark's only function is to provide a small warning to someone who is completely ignorant of copyright law. Against what the OP suggests, there *are* uses for photos that small -- for exactly the same use as here, on websites.
But the main thing is, they look crappy -- it's like a pop-up commercial. You can't avoid looking at it, and here on a beautiful print of a gorgeous natural scene is a crappy little legalistic reminder not to steal the work. Imagine Moonrise, Hernandez, New Mexico with a copyright notice, say, over the graveyard...