Google recently started a small interesting game. The game is Google Image Labeler.
How does the game work?
The game is like you can select a nickname or it will be guest. You are randomly paired with partner who is online playing the same game. You can play game for a period of 2 minutes time. During the time both the partners will see same image. We can suggest relevant labels. You will get point if your partner type the same label. We will fail if we type the label which Google already labeled. You are about to gain maximum points within 2 minutes. Number of points you receive will be depend upon the how descriptive your label is? If your pair type the same descriptive label(If your figure is Car. Pair will get more points if he/she type specific car name say for instance Honda Civic instead of Car as label) you will receive good points. Top pairs will be listed at top right corners of the application.
After the game you can see the images you labeled and site in which images resides and its labels.
What is the intention behind?
The original intention behind the game is to label all the images to show better image search results. If you logged using the your Google account, Google will track the points.