I've always found armchair theories interesting. I came across this one on the good ol' internets:
What are some of your favorite armchair theories?
Echelon.
There was a news story a few years ago saying the FBI was going to tap into the Internet, and/or all the ISP's and save all emails. But that was (or is) nothing compared to what I had already heard about since the late 1990's.
Echelon is (supposedly) a global spy network more powerful than the CIA, NSA, etc. It records ALL voice telephone calls, ALL faxes, ALL emails, perhaps even all Internet traffic. It's barely possible to store all this stuff, much less search through it in real time. The idea is when they find a suspected terrorist or other seedy character, they sift through everything stored looking for what he did on the Internet, who he called, etc.
There's supposedly some laws that prevent certain governmental organizations from spying on its own citizens. Having other countries' spies do it conveniently gets around any such laws, thus there's cooperation among many of the world's investigative organizations.
Shortly after 9/11/2001 I noticed (because I bought a couple) that a 40 gigabyte hard drive cost about $100. It can store 2,000 times as much info as the 20 megabyte drive I bought used circa 1986. Now for $100 you can now buy a 1 terabyte drive that stores 25 times the 40 gig, or 50,000 times that 1986 drive.
There's no problem storing a huge amount of data, though nowadays a lot of disk drives are used to store TV programs and movies (they're in TIVO's and other brands of DVR's). In the near future they will be used to store even more video information (from cameras in virtually every public location - any terrorist attack, crime, or odd/questionable event will be recorded and the perps identified through such recordings. There's actually very little doubt this will happen/is happening).
You can check current hard disk prices here:
http://www.pricewatch.com/hard_removable_drives/
One of the driving forces of the huge improvement in disk drive storage technology is the large R&D funds the disk drive manufacturers have, a result of profits from huge quantities of sales, not just from the popularity of hundreds of millions of personal computers, but also allegedly from large numbers of disk drives being purchased by organizations such as Echelon to store the info they collect.
In reality, there's been a lot of discussion of whether Echelon exists and how big it might be. Here's WIkipedia's "Fair and Balanced" article:
http://en.wikipedia.org/wiki/ECHELON
Here's a site with some "good info:"
http://www.fas.org/irp/program/process/echelon.htm
Even if Echelon were total fantasy when I first heard of it, there are so many other groups and technologies coming into being (speech recognition and face recognition are just two pertinent technologies that are coming right along) that appear to do many of the things
nutjobs theorists claimed Echelon was doing that it's becoming harder and harder to separate fact from fantasy.
Have fun discussing the Kennedy assasination and what are the best
tinfoil hats. Uncle Sam and The Dear Old Queen are listening.