Searching Web for Hand drawn images


A friend of mine wanted to know how he can search Symbols like ♀ and i was wondering where i would find such articles but atlast i hit on a research site in princeton where they have a web site shape.cs.princeton.edu/search.html

The interesting thing about the site is , you can hand draw images and the engine will search for similar shaped objects from a respository of images stored in Database. Pretty interesting research and am sure if google has this integrated , search engine capability will be phenomenal and news rules of intelligence can be built into them.