At last week's Google Unbound event in New York City on digital publishing, Web 2.0 guru and technology publisher Tim O'Reilly described the evolution of a subject entry in Wikipedia graphically based on the cumulative number of changes, edits, and additions contributed by our planet's human knowledge engine. In many ways the image looks like the journey through time one sees in layers of eons geological strata (image left -sort of a human-created Grand Canyon of knowledge).
As Tracy Sheridan points out in the attached link, there's a reason Wikipedia is one of the world's major brands (right behind Google and Apple, and hand-in-hand with You Tube) ... and it has everything to do with free culture. Wikipedia founder, Jimmy Wales, will be applying the same power-of-the-people structure to the world of search, which he's naming Wikia, currently dominated by Google. In the new world of Wiki's, people are the algorithm.