I was introduced to QR Codes recently in my Digital Culture Class. For an explanation, just visit Wikipedia. Or to create your own go to Kaywa.com.
In the same class, I learned that google has a new image search option. You can upload an image and it will find that same image on the web. I decided to search for a t-shirt design of mine that was printed at Threadless.com.
Of course I found the image at Threadless.com and at my site, but I found something amazing that I didn't even know existed!