Russian Photographer’s Experiment Destroys the Illusion of Privacy, article.
It's a rather fantastic side effect of social media sites that almost anybody can now be found easily. As an example, a few years ago I found a Russian site which had ripped off a lot of pictures from my commercial site (I had at the time). It was in a big way, and it was the only time I've taken real action against such a thing. So I asked my lawyer to help, and very soon he had found the culprit, and the site was taken down. He had found the guy on a Russian social media site!
I said to him: "the social media sites are really a god-sent for lawyers and detectives, arent't they?" He said "you have no idea".