An Example of a Bad Map

A quick look around the web yielded this terrible map.  At first glance, I did not notice anything major..then I read the following paragraph.

A map of the world, showing the most popular social networks by country. Most of the the colors used look the same for the color blind. As color is the only method of connecting the networks to the countries, this map is unusable for the color blind. http://wearecolorblind.com/examples/bad/world-map-of-social-networks/