The concept of gross national happiness (GNH) was developed in an attempt to define an indicator that measures quality of life or social progress in more holistic and psychological terms than gross national product or GDP. - Wikipedia
That's interesting. Wonder if Zappos is measuring something like this of their customers or employees.
GNH was first coined in Bhutan and Wikipedia further mentions:
In a widely cited study, "A Global Projection of Subjective Well-being: A Challenge to Positive Psychology?" by Adrian G. White of the University of Leicester in 2007, Bhutan ranked 8th out of 178 countries in Subjective Well-Being, a metric that has been used by many psychologists since 1997. In fact, it is the only country in the top 20 "happiest" countries that has a very low GDP.