Facebook is so ubiquitousâ??it has 1.19 billion monthly active users, or more than 15% of the Earthâ??s populationâ??that itâ??s possible to detect huge migration patterns from a few snippets buried in its usersâ?? profiles, specifically the huge tide of people moving to mega-cities around world.
Data scientists at Facebook compared usersâ?? hometowns with their current homes to discern the 10 cities with the most â??coordinated migrations,â? where at least 20% of the population of one city has moved to another city. The top destinations were scattered across the world; not surprisingly, most of them are in countries that are rapidly urbanizing: