Google is trying to add keywords to images in its image search results through the use of a game called Google Image Labeler. Based on Luis von Ahn’s ESP Game, two players are paired up and attempt to label the matching image they see with the same label to earn points (though only bragging points, they don’t actually earn you anything). From Google:
“You’ll be randomly paired with a partner who’s online and using the feature. Over a 90-second period, you and your partner will be shown the same set of images and asked to provide as many labels as possible to describe each image you see. When your label matches your partner’s label, you’ll earn some points and move on to the next image until time runs out. After time expires, you can explore the images you’ve seen and the websites where those images were found. And we’ll show you the points you’ve earned throughout the session.”
Sounds like a fun and interesting way for Google to add labels to its photos, and the game is addictive in a “I don’t know why, but I can’t stop playing” sort of way.