I've started freezing my coffee beans and so far it has worked out well based on this-
http://www.home-barista.com/store-coffee-in-freezer.html
I also, like Tranceport, have invested hours and lots of money on espresso machines and grinders. I also buy green coffee and roast it myself. I currently roast about 2 pounds at a time and then it goes right into mason jars and into the deep freeze. When I need another 1/2 lb. of coffee I pull one out, or right from the freezer and into the grinder. No difference.
However, there would be no point in freezing already stale coffee from the supermarket. It is unfortunate that coffee freshness isn't emphasized more, but there is no requirement for fresh coffee. Large coffee companies and stores have nothing to gain by promoting coffee freshness as it sits on the shelf for long periods of time until they can finally sell it. Also brands like Folgers use inferior robusta beans in their blends which is cheaper.
I kind of look at coffee freshness (time since roast) sort of how I look at fresh vs. frozen or canned vegetables. They both do the job, but one is better than the other given the right preparation.