Remember back in 2008 when we blogged about a new beta service called “Tin Eye” that allowed you to upload an image and find higher-resolution versions of that same image?
Well Tin Eye is still around and long out of Beta, but Google has come along with something better. They’ve improved their image search engine so that you can drag an image onto the search box and find other images–not just the same exact image, but also similar images. You can drag a photo from your vacation to Machu Picchu into the search box, and Google will find other photos of the same place.
Check it out at http://images.google.com, or watch this short intro video to show you how it works: