I think this is slightly off the beam, but worth it. One of the bees in my bonnet is energy efficiency.
It is bad enough that the world's largest energy using nation uses spectacularly inefficient autos and lifestyles are based on the idea of inexhaustible supplies of cheap gasoline. But buildings use considerable amounts of electricity, too.
Enter the ifenergy blog and a link to six degrees of energy efficiency, this is part of the six degrees challenge. You can take the Six Apart Quiz, to see how efficient you are win money off vouchers for home insulation products in the US. Have a gander or a duck (look).