Google Image Labeler was a feature, in the form of a game, of Google Image Search that allowed the user to label random images to help improve the quality of Google's image search results. It was online from 2006 to 2011.
History
Luis von Ahn developed the ESP Game, a game in which two people were simultaneously given an image, with no way to communicate, other than knowing the matching label for each picture or the pass signal. The ESP Game had been licensed by Google in the form of the Google Image Labeler and launched this service, as a beta on August 31, 2006.
Players noticed vari...