I think it's odd, I believe copyrights are owned by the photographer. I think they should have specific claim to the copyright, but at any time should be required to take down and destroy pictures when a person in said picture decides they don't want to be in it. Though w/ digital-ness that may be nigh impossible, maybe they could make a DRM image that if you delete the master all images across the web cease to work. That would definitely be an interesting technology.