Almost the entire continent of Africa is geographically poorly represented in Wikipedia. Remarkably, there are more Wikipedia articles written about Antarctica than all but one of the 53 countries in Africa (or perhaps more amazingly, there are more Wikipedia articles written about the fictional places of Middle Earth and Discworld than about many countries in Africa, Asia, and the Americas).
There are some countries that are crammed with a dense amount of floating virtual information, such as Germany (with an average of one article tagged for every 65 square km), while others remain as virtual deserts, such as Chad (with an average of one tagged article every 17,000 square km).
Sharp divides between the Global North and the Global South can likewise be seen when looking at the number of geotagged articles per person. Austria, Iceland and Switzerland all have around one geotagged article for every 1,000 people, while in China or Guinea there is just over one article for every 500,000 people.