Now Playing: 8-7-13 Marketplace Tech: Internet freedom around the world

We think of the internet as an endless expanse of data and interaction with big, bright points of focus, and a million dark corners. But more and more, your view of the web's vast spectrum depends a lot on where you live. In Vietnam there's an extreme example. A new law there will make it illegal to post news or "general information" online. And, a look back at one year of NASA's Curiosity Mars rover.