About two years I was shown this image on Facebook. A friend recognized the drawing to something I had done about 4 years earlier. It was being used in someone's Zombie Outbreak paraphernalia. He had seen it on his Facebook feed and I was never able to track who had done it. Just this past weekend I stumbled across it on a Google image search and noticed it was on Pinterest and repinned numerous times. Then I found it on Cafe Press being sold for poster orders. I reported the products and yesterday I got the email that the image was taken down for copyright infringement.
Score one for the little guy. I've now placed watermarks on my pieces that are uploaded to Deviant Art.