Human computation
(This is a reprint of the original post)
Yesterday, after doing some walking at Picos de Europa, I returned home very tired, so I sat down and watched a video of a conference titled Human Computation, by Luis von Ahn. Wow! I'm still shocked! It is funny and brilliantly delivered, and the content is amazing. A must-see. By the way, these are the people that created the ESP game.