The National Security Agency is searching the contents of vast amounts of Americans’ e-mail and text communications into and out of the country, hunting for people who mention information about foreigners under surveillance, according to intelligence officials. Report: N.S.A. Searches Content of Messages To and From U.S. [nytimes.com]
The N.S.A. is not just intercepting the communications of Americans who are in direct contact with foreigners targeted overseas, a practice that government officials have openly acknowledged. It is also casting a far wider net for people who cite information linked to those foreigners, like a little used e-mail address, according to a senior intelligence official.
I think one suitable response to this mess could be keyword trolling
In the 84-85 UK miners strike phones were tapped by the security services. I don't know how true the story was but I heard it said that they were doing this on a large scale with some early voice recognition software that started recording when keywords were detected. They forgot that the strike would come up in just about every conversation in the mining communities with predictable effects on the amount of recording tape used.