I was doing research on a presentation I am making to my peers regarding Web 2.0 when I came across this video. It's a great summation of how Web 2.0 enables all of us to be both learners and teachers.
The one red flag that struck me as I watched this was how corporate America would react to giving this kind of power to its employees. Think of it, the ability to circumvent the vertical flow of knowledge downward, which is what corporate training is all about, the dispensation of management-approved dogma.
I think initially there will be great resistance until it can be shown that unfettered cross-pollination of ideas can be profitable.