In China, Vietnam, Russia and several former Soviet states, the dominant social networks are run by local companies whose relationship with the government actually constrains the empowering potential of social networks.
In the wake of the Internet getting shut down in Egypt - something that also happened in Xinjiang - I know that there are groups working on ways to help people get online when domestic networks get shut down. This could also be of use to some people in China.
It becomes dangerous for somebody who doesn't want their boss to know their sexual preference to use online networks to push for laws supporting gay marriage or same-sex partner rights if they can't do so with a pseudonym.
I am well aware of the facts presented by numerous security experts on the many ways in which the United States' digital networks have come under siege by cybercriminals and under daily assault by hackers in league with various foreign governments.
The potential for the abuse of power through digital networks - upon which we the people now depend for nearly everything, including our politics - is one of the most insidious threats to democracy in the Internet age.