You can see where the traffic is important and when it is being disrupted.
It should be noted that even with a government blackout, there still remain ways for the internet to be used.
There are a number of issues to be addressed in this area and in an age when Cloud computing and social media is becoming commercially significant, there will need to be some work done in this area. It is both a reputation and a relationship issue. Here is the Wired view.
You may also like to know that you can see outage of Google services from a transparency service they run here.