I am a server administrator for a living and developer, and I know the power of computers, if everything is logged they can simply search the logs to look for keywords and create statistics....Im sure literally every word is not read by human eyes but if they find someone using certain words a lot your damn sure they are going to look into it...they just have code to detect these things, real simple example, im sure its much more advanced - if someone said the word bomb or typed the word bomb 100 times in 2 weeks Im sure people are alerted of this and that they are paid to look into it..
It is exactly the same way that the Internet is operated by System Administrators like myself, to put it simply: log files are monitored in real time and alert me of events and keywords that I should investigate for problems. These alerts are coded by the staff and could potentially be incredibly advanced, just look at googles algorithm, they are the ones that are working with the CIA and homeland security to track us, just google it lol...public information.
The real fucked up thing is: Some dude with a government pass can type in your name and see all your phone conversations and internet searches...anything you have said/wrote over the wire. You are in a database, databases are and hardware are much more advanced today, they can make much larger queries to the database allowing for incredibly advance algorithms with new software and hardware. They could do some amazing things with the database they have, they've hired a lot of people, more than anyone.
Here is the Choice:
Liberty or Tyranny....
Even with current technology and with the times as they are, that choice is just as obvious as always, Id argue that with todays technologies that the issue of liberty is more important than ever.
"Ron Paul: 'There is no need ever to sacrifice liberty in order to maintain security'