In my Uni course in one of the early weeks we were asked to watch a 2 part video of Clay Shirky talking about cognitive surplus.
It talks about in the 20th century are cognitive surplus was taken up with predominantly television viewing, but now with the internet we are able to use a new media tool that allows us to participate/collaborate.
I loved it. I am working on an essay plan for another subject right now and I suddenly realised having something about this would fit into one of my paragraphs so I went looking for something I can reference in my essay, and in the process I found this TedTalk.
Below are the links to the original videos we watched