I’ve started playing around with a very interesting Information Visualization (a.k.a. as BI) tool called Tableau.
Take a look at a first attempt – visualizing data from IAB AdEx 2011.
You can select one or more countries in the map and see the actual breakdown between different types of digital advertising market size in 2011.
You can try it at http://public.tableausoftware.com/views/IAB-ADex-2011/IAB2011?