Thanks Dana for the link.
Folow the link to see more stuff.
Rock-osity, Who’s Got It?
We took the average salaries of the top 14 countries in our survey and ran them through The Economist’s Big Mac Index. Doing so allows us to see, in a compartive sense, how “large” a designer “rolls” on his local turf. For instance, the chart indicates that while cruising their respective neighborhoods, a UK designer rolls larger than does her German counterpart. The simple economic explanation of these differences is that they are due to deviations in demand – in some countries designers are simply hotter commodities – and as is the case with rockstars, demand turns into dollar$$. And this is why we measure the degree of this demand in units of “rock-osity”, of which there are eleven.