In Pictures: 20 awesome Cloud services you've neve...
TinEye (image search)
Have a photo of something, but unsure about what it depicts or where it came from? Input an image at TinEye, and the site will look for other places the image has appeared online. You can use TinEye to find a higher-resolution version of an image, see it in various contexts online, and learn whether anyone is using a modified version of the image.
In Pictures: 20 awesome Cloud services you've never heard of