Excellent Map Tool

The site http://show.mappingworlds.com/ has put together some great visualizations of information.  They take statistics such as population, GDP, illiteracy, cause of death (AIDS), legal abortions measured by country and re size the country to reflect that number.  It is both a cool and effective way to present data, some of which is surprising (Kuwait has as many oil reserves as the US and Russia combined, China accounts for 50% of legal abortions in the world).

Here are a couple examples below:

Population:

Oil Reserves