Cartograms are incredibly interesting because of the fact that they substantialize the thematic data set in the map over area. Political boundaries are still held, but area is distorted to show the comparible size of data in relation to the physical size of the area studied.
Found - www.nytimes.com
This blog is a map catalog in which I am displaying fifty different types of maps and a tid-bit of information that looks into the purpose of the map!