THE BEST: have to try it
imagelabeler .....very addicting

by google

http://images.google.com/imagelabeler/

o you have to come up with label for images
o you get points if someone else also gives it the same label

o that someone else is looking at the image at the same time
o you don’t know what they are entering

o each time you match, a new image comes up

o there is a time limit , so you have to fire away to get matches

google gets better labels out of the deal