Although I agree with the overall sentiment here, and personally believe the USA lost it's freedom around the Johnson & Regan administrations, that page you have quoted from just screams of "tin-foil-hat-wearing-nutzoids typing from their fallout bunkers.
Have you checked out the comments on it? Not a one of them wasn't fully stocked up with guns and food to last through the revolution... And every ad was for some kind of survival gear or gold coin. Nutcase central.
What's happening to america is not Orwell's vision of big brother, anyway. There is no one source like "the government" that is doing the controlling... Even our government itself is under the control of hundreds of separate corperations. (Although it is COMPLETELY controlled, there isn't one mind or agreement which way to take it towards... Except profits.)
Like in the matrix, we the consumers are all walking duracell batteries that our corporate overlords are farming for profits. Whatever makes us more profitable is what lies in our future... And the corporations WILL take a cut in their profits if it means holding off a revolution.
So there isn't going to be any revolution at all. 95% of america would sit at home and watch it on television if there was. Or record it and upload the fighting to youtube.
They'd feel like it's happening in some other country, even if they themselves are recording the bloody footage...
If you want to know WTF is REALLY going on in the world today, and what you can do to stop it, I highly recommend this tiny short 8-minute film:
YouTube - The Story of Citizens United v. FEC (2011)
(It's the best general-purpose explanation I've found for most people. It's also short.)
And for those that want to know
exactly how we got to this point, the BBC did an
AWESOME, JAW-DROPPING 4-part documentary on it called "the Century of the Self" which will show you in incredible detail exactly how your current world was formed, starting with a theory by Sigmund Freud.
Here is the first (and most important) of the 4 episodes:
YouTube - The Century of the Self - 1 of 4 - Happiness Machines
The 3rd Episode goes into depth about Marketing during the 70's and 80's, when our final marketing models were formed. - But if you only see one other I recommend the 4th episode, which shows exactly how it translates directly into our politics.
I really can't recommend the films above enough. They aren't that long and offer a far greater understanding of the world and your place in it.
I'd suggest them to be required watching for every school student, but once you understand the system, you'll know exactly why this could never happen.