I get what you mean about usage outside of Panoramio. Obviously you work with your images to add quite a bit of value, and it sucks then when people swipe them to use elsewhere for free. I try not to do too much post-production so that I don't feel to "invested" in my images....but then I'm not a pro photographer either. I bet Aaron Nuffer suffers the same dismay. Damn...too bad, as your images are always a pleasant surprise of beauty when I stumble upon them!