Google Image Labeler
Google has released another beta product called Google Image Labeler. The premise is you and a random partner have 90 seconds to get a match on as many pictures as you can. A match is a label or tag that you give to the image is the same as one your partner has given. So it's a little game you can play in your off-time, and if you sign in, you can use a display name.
This is just genius. By creating a game out of it, Google is having the users of the internet help them find better ways for users to search for images. The other brilliant part is that it only lasts 90 seconds, so you are forced to think quick, and thus you have more of a stream of conscious going on and you are less likely to filter your response.