It provides a quick visual reference of the density of each country or region, and if you wanted to you could take it down to a state level in the USA. Like the motion graph I pumped out here earlier, this has many uses.
For example, a reliability management team could have graphs that show the number of reliability engineers per plant, or the quantity of benefits that have been returned per plant in different states.
or if you are running a multinational project then you could use this to talk about initiatives, benefits, analyses performed and a whole range of additional areas. Powerful stuff, I really like Google.