Human Computation
While the notion of human computation (as applied to image search) is interesting to say the very least, I suspect that it will not work well in isolation. Why? Because it will be ineffectual while catering to the long tail. Given the picture of a person, most players are likely to use the labels “man” or “woman” since they have no clue as to who that person is. For example, a label of “man” to describe a picture of the President of Uruguay is unhelpful. Here’s another example.. Since there is very little by means of visual information to distinguish this picture of Lake Tahoe from this one of Crater Lake, most players (who have not been to either place) are likely to use tags like “scenery” and “lake” that while being accurate in describing the picture are way too generic when it comes to actually making a qualitative difference to search experience.
On the flipside, the notion of human computation did not seem totally unfamiliar. That’s what del.icio.us users have been doing for several years now. They end up improving search results by tagging/book marking their URLs. I suspect that del.icio.us results are likely more accurate than those generated by the ESPGame. The reason being folks using del.icio.us have more information to describe a page that a URL refers to (having actually read it) as opposed to people who are presented with a random image of a person whom they have never seen before.