What may come as no surprise to Facebook users, the social media company announced in a blog post that the U.S. presidential election was the most "talked about" topic on Facebook in 2016. Phys.Org highlights the other most-discussed topics in its report: The bitterly contested election in which Donald Trump defeated Hillary Clinton was ranked as the leading issue, followed by Brazil's political developments which included the impeachment of president Dilma Rousseff, Facebook said in a blog post. On the lighter side at number three was the runaway success of Pokemon Go, the location-based augmented reality game for smartphone users. Other subject matters shared among Facebook's 1.79 billion users were more sober, with the fourth leading topic the "Black Lives Matter" movement, followed by the election in the Philippines of Rodrigo Duterte. Number six on the list was the Olympic games, followed by Brexit, the Super Bowl and the deaths of rock star David Bowie and boxing icon Muhammad Ali. Facebook said it measured leading topics by how frequently an issue was mentioned in posts made between January 1 and November 27.