Google Image Labeler is a feature, in the form of a game, of Google Image Search that allows the user to label random images to help improve the quality of Google's image search results.
.On August 31, 2006, Google launched this service, as a beta.
Luis von Ahn developed the ESP Game, a game in which two people are 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 has been licensed by Google in the form of the Google Image Labeler.
Players have noticed various subtle changes in the game over time. In the earliest months, through about November, 2006, you could see your partner's guesses during play by mousing over the image. When the "congenita abuse" started (see below) you could see if your partner was using those terms, while the game was underway. The game was changed so that only at the end of the game could you click "see partner's guesses" and learn what he or she had typed. "Congenita abuse" was finally stopped by changes in the structure of the game in Feb. 2007 (see below). During the first few months of 2007 regular players grew to recognize a group of images that signified a "robot" partner, always with the same labels in the same order. This appears to have changed as of about March 13, 2007. Suddenly most of the images seen are brand new, and the older images come with extensive off-limits... Read More