I had a submissive client last week who's been an "admirer" of mine for a few years. He told me that he had downloaded my Domme pictures from 2004 (when I used to show my face) and he still has them!! Those pictures I don't mind so much as I was dressed in pvc gear throughout and there was nothing uncompromising about them. But it did freak me out a little bit. He saw nothing wrong with that and even considered it an homage.
Another time when I followed my stats to see where my traffic came from, I found that somebody had lifted one of my pics and posted it on a non-punting related website based somewhere in Africa. It was some random guy telling other posters what he considered to be the ideal woman, and he used my pic as an example.
I had another guy tell me a few weeks ago that he's downloaded a picture off my current site and uses it as desktop background!
I showed my face back then and I put up with the consequences. The one thing I'm thankful for is that I never had pics in any uncompromising positions, they were purely portrait, so if I had to lie to explain them away, I'd bluff like hell.
But it goes to show you that once you give in and you start sending pictures that you wouldn't otherwise have on your site, your picture can end up anywhere.