All of the calculations I have seen used to sell this idea have one major flaw. They assume that the price per kWh is constant. Given the general trend of any US corporation is to at least attempt to replace lost revenue; If enough people reduce energy consumption it is very likely that the utility companies will simply raise rates. In the end, the consumer will pay more both up front and in the long term.
rights != entitlements
In the US I (supposedly) have the right to bear arms and the right to freedom of the press. That does not mean that the government has to provide me with an AK-47 or a printing press.
I have taken classes both at Udacity and Stanford. I found that the Stanford class was more like a traditional classroom brought online. The Udacity course felt like it was designed from the beginning as an online experience.
Modellismo writes: "The German garage, 'The Bug Box', created a full size replica of one of the most famous RC Cars of the 80s: the Tamiya Wild Willy. They even made a huge replica of the old Acoms radio to add an additional geek touch to this masterpiece.
Two years ago the same team created the 1/1th scale Tamiya Sand Scorcher that have been exhibited by Tamiya at the Nuremberg SpielwarenMesse 2010 (the World biggest toy fair)."