recursion

Google Image Labeler is fun for the whole family. You and a random partner collaborate on labeling images. Once you agree on a label, you go to the next image.

It's a really cool application of AJAX.

I wonder if it wouldn't be better to have veto over your partner's labels so you could do something more like tags. The labels I was coming up with were pretty basic: "man", "people", "map", "chart". That doesn't seem like it would help people find what they're looking for.