It's amazing how paranoid people are about the Internet and government. Every time I hear the profoundly stupid idea about how the "Government," (but what really is meant is the American government) is scanning all Internet traffic for key words so they can find terrorists, I want to get up on my soap box and give a lecture on how the Internet works.
Usually, I can't resist the urge and I go off on a tangent for a few minutes.
Unless you work for the FBI, or the NSA or the CIA, or are already a criminal with a record, it is extremely unlikely that anyone from the US government is taking the time to scan your PC for secret terrorist messages. They certainly are NOT monitoring all possibly traffic coming in and out of your machine. If you aren't living in the US, it is even less likely that everything coming in and out of your PC is being monitored. I am 100% certain that if you send a message to a friend in Alberta and it never leaves CA net that it is NOT going to some mythic server in the Whitehouse or Pentagon for scanning.
It's just not how the Internet works.
It never was.
It is extremely unlikely that it ever will be.
Stop worrying folks.
Big Brother is not watching you.
He's got better things to do with his time.
Like play golf.