Which are the go-to web pages around the world? This map here will show the most visited websites around the world, broken down country by country.

Put together by Mark Graham and Stefano De Sabbata for Information Geographies, it is based on Alexa data and depicts countries sized by Internet population. Here's some information about it:
The situation is more complex in Asia, as local competitors have been able to resist the two large American empires. Baidu is well known as the most used search engine in China, which is currently home to the world’s largest Internet population at over half a billion users. At the same time, we see a puzzling fact that Baidu is also listed as the most visited website in South Korea (ahead of the popular South Korean search engine, Naver). We speculate that the raw data that we are using here are skewed. However, we may also be seeing the Baidu empire in the process of expanding beyond its traditional home territory.

The remaining territories that have escaped being subsumed into the two big empires include Yahoo! Japan in Japan (in join venture with SoftBank) and Yahoo! in Taiwan (after the acquisition of Wretch). The Al-Watan Voice newspaper is the most visited website in the Palestinian Territories, the e-mail service Mail.ru is the most visited in Kazakhstan, the social network VK the most visited in Belarus, and the search engine Yandex the most visited in Russia.

[OII via Flowing Data]