Games With a Purpose (GWAP)

joelaz:

Simple, fun games that pair random strangers to solve tasks like tagging photos and categorizing music. Players enjoy a game while the data that's collected is used for other purposes that benefit...

Luis von Ahn is one smart guy. For those of you that caught the “Cognitive Heatsink” video on my blog a few days ago, GWAP should make a lot of sense in that context. Worth pointing out that I feel more & more websites will move to game-like mechanics to engage their audience, while extracting value and sharing it back with the same group.