Yikes!
http://www.youtube.com/watch?v=C9edUD8tje8&feature=related
The government can listen to your non- cellphone conversations, even when your cell phone is turned off.
The only way to avoid it…remove the battery.
Some cases of that here as well, so ‘we’ switched to encrypted systems, but it did not take long for that to be cracked either.
Watch ‘enemy of the state’, then if you thought that was overkill adjust it a couple of notches up.
You can even get duplicated SIM cards as a service for crying out loud 
Even if the gub’mint wouldn’t want to listen in on my conversations, I wish I could go back to two tin cans and a length of string.
Didnt any of you see the movie “Eagle Eye”?
The technology used in the film to tap cell phones for survellence is already here today. DOnt know why in the universe tha CIA would want to listen it to my boring conversiaions. “Yeah honey, pick up milk, eggs, and dog food” 