LoudMusic writes "Google has a new service that you actually provide to them. Google Image Labeler 'allows you to label images and help improve the quality of Google's image search results.' You're randomly paired with another participant where you both enter labels for random images until you get a match. You are scored on your matches and ranked as a pair at the end of 2 minutes. It's a pretty interesting way to generate labels / tags for data. There is even an 'all time records' leader board for users who log in."