With TinEye, a new search engine, people can use a picture to look for similar ones. Useful if you're looking for a pretty version of something. After uploading a photo, TinEye gets to work. It can also help photographers track their work on the internet. It's still a beta-version, but on the site you can find a few cool examples.
Future Vision by Erwin Van Lun on this article
The virtual world is connecting more and more effectively with the visual human, the human that thinks in images. Soon we’ll be able to point at something on the street and shout ‘I like that!’. A brand that’s supporting you will immediately start to think along with you, recognize the object you’re pointing at and retrieve information from the past and present about it. Perhaps it’ll even be able to buy it for you. Not just in western countries, but especially in countries where people have never learned to read this’ll be a big thing. This future keeps getting closer.