From Austin American-Statesman (link):
Americans may be concerned about what the government will do with the millions of private telephone records it reportedly has collected. But Chinese citizens know what their government does with such information. And so do Americans and other foreigners living here.
In China, Big Brother is listening.
Chinese authorities monitor telephone calls by foreign correspondents ” not just calling patterns, as the National Security Agency is reported to have checked, but individual conversations. Online, roughly 50,000 “Internet police” patrol the Web in search of objectionable speech or images. Even cell phone text messages are censored.