This world map represents the most popular websites by country. No big surprises here as Google reigns supreme in most parts of the world followed by Facebook. Yahoo is still the most visited website in Japan and Congo while Baidu is the Google of China in every sense.
The data was arrived from the Alexa rankings of websites per country but there are other ways to estimate traffic ranks and they should paint a similar picture. A larger version of the map is available at The Atlantic.