Wikipedia never ceases to amaze me. It has fundamentally changed the world. Together with Google, Wikipedia has changed the process of finding information: Type what you are looking for into Google and chances are you will end up at Wikipedia.
I particularly like how this little visualization came about, as the author explains:
I was listening to writer Clay Shirky talk about cognitive surplus – the idea of spare brainpower in the world’s collective mind just sitting there waiting, wanting, to be harnessed. He had a stand-out statistic that snagged my mind. I thought I would visualise it.
I don't understand why more complex organizations don't try to emulate Wikipedia. They organize information in blogs and decks, and via press releases and archived email. This wasn't intuitive before, and it's even less so in the post-Wikipedia world we live in. An entire generation will enter the workforce in the near future and the "search + wiki" model is the way they have always found information.

