... image search your photos on Google and the like? I know it can be contentious, but I don't limit who can download my pics on Flickr, so they sometimes end up in really strange places. I've just spent 10 minutes and the strangest place a couple of them have ended up is on a pet lovers site written in Arabic (took me a few seconds to realise how to scroll down the page - the scroll bar is on the left!). They've been used as a backdrop for a webpage - looks like its been done as a school project! It can be quite interesting to see where your pics end up and what they get used for.