Psiphon is a peer to peer software program that defeats censorship, enabling citizens in censored states to freely surf the net. The open sourced software, developed at the University of Toronto, is thought to be unstoppable.
Implications - This technology will definitely be useful for people trapped within countries that are undergoing a harsh government crackdown on net access. As social media and the internet continues to play a bigger role in protests and civil disobedience around the world, this kind of idea would definitely help those looking to organize civil action communicate in even the most strict of circumstances. I really have to hand it to the Citizen Lab at the Munk Centre for International Studies for coming up with this clever tool.