This is a very interesting video in which you will find many of the new aspects of Web2.0. The point is that a cooperative effort of humans can solve some of the greatest problems of Artificial Intelligence. Think about captcha: these are small problems created by computers, that the computer itself is not able to solve, but relatively easy for an average human.
Speaking to "think out of boxes", the video reported below can give some insights and interesting point of views about the new cooperative way to rewrite the web.