Multimedia search engine

One more abstract useless thought.
Till date the search engines that we use on the internet are also text-based search engines. These search engines will typically have a box to put your text followed by a neat button to click on to begin with the search. On submission of your search request you will get a well formatted page containing all the search results. Usually a bunch of links following different websites are presented. In case it's an image or video search links to the image/video resources are listed.
Computers are intended to become close to human brain with the ability to interact using all the sense organs like human beings. Will you recognize my face from a group photo taken while I was in school? tough :) If you can I must say you have a good eye-sight and power of pattern recognition, that's human brain. I hope someday we will have search engines to upload the image of my face and find out a group photo posted somewhere on the net. Exciting, aint it!! we can do this with many media patterns such as

# image
# video
# sound/music

I could have added more to the list if we had smell, taste and touch :) but we don't have input/output devices for them yet. ooops!! sorry it's not my concept (well every computer user might have thought this way while seeing a lovely photo of a food S/he likes) but has been patented recently (http://www.patentstorm.us/patents/7562816/description.html). I would hope we will see it commercially available in the market soon. Even there are touch printers in the market too (http://www.gizmag.com/sense-taste-smell-touch-printer/13689/).

Image pattern recognition will help greatly in finding out photos from the internet for the purpose of research, investigation.
Sound patterns would track down the copied or pirated music ;) and videos will help in tracking down piracy.