There is a website (www.wallpart.com) which is stealing art and selling the prints of them, trying to make money off your hard work. Sadly, it is damn near impossible to find your own work in the mess that they have of a search. I've seen better searches in a canned website. It looks like they are doing this terrible search on purpose however, making sure that you can't find your own work to remove it. But that's just the tip of the iceberg of the problem. They don't actually save the files to their local systems, instead using your own bandwidth and storage to make money off of you.
Here's the rub. They have a DMCA claim form at the bottom IF you can find your art, BUT they are located in the Ukraine, so chances are, they won't do anything. But their own laziness and inability think far ahead leaves them with one major weakness: They can only link to pictures they can actually see. To that end, I have made it impossible to hot link on Ambient Dimension. If you wish to see a picture, you must be actively browsing the website. This will stop these kinds of thieves, and make sure that YOUR art is as protected as it can be on Ambient Dimension.
Now, for all you other artists, if you use sites like Deviant Art, Tumblr or other public places, chances are, your art will get stolen and you can't do much, except maybe delete the posts with the art. For anyone who has their own website, if you are good with PHP, I will include a link to a bit of code you can work into your system to block these kind of scammers. It's a system very similar to what we use, and it works VERY well. Time to stop these art thieves once and for all.