I know that having posting code beneath every gallery photo on BlueBlood.net means people will sometimes use the posting code to, ya know, post pics. We’ve got code for posting to LJ and other HTML spaces and we’ve got BBCode for posting to forums and related structures.
I guess it is kind of viral where one person sees a posted pic and they post to two friends and they post to two friends and so on. I expect people to have discussions about the images. I expect some people to like some images more than others.
But sometimes people get really bananas with the posting and sometimes people seem to just really flip the fuck out over pictures.
Whether you love or hate a photograph, you should only love or hate it soooooo much before it becomes pathology.