Quite simply, they’re useful and free ways to bring high-level thinking and through-provoking ideas into the classroom and your home. What could be better than that?
http://edudemic.com/2013/03/why-ted-talks-have-become-so-popular/
DawsonITE is a blog devoted to Educational Technology. It's compiled by Rafael Scapin, Coordinator of Educational Technology at Dawson College in Montreal (Canada).