Misleading area graph

This chart from the Freakonomics blog today gives us a horrific example of using linear proportions in an area (or "bubble") graph. The diameters, rather than the areas, are proportional to the values they represent...
http://freakonomics.com/2011/03/07/the-unintended-consequences-of-polio-eradication-in-india/

And here's another nice examination of another misleading area model.

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