Facebook's headquarters in Menlo Park, California, on Oct. 29, 2015
At the end of an ugly presidential campaign the likes of which the U.S. has never seen, Facebook has acknowledged it has a lot more work to do in combating fake news on its platform.
The social network is a daily stop for tens of millions of voters and played an important role in shaping and reinforcing people's opinions.
But sometimes, the information being shared was based on biased or outright fake news reports.
BuzzFeed unmasked a group of Macedonians who made up fake news stories about the election and shared them on Facebook to collect ad revenue.
Meanwhile, a Twitter user posted ads suggesting that voters in favor of Hillary Clinton could avoid the line by texting their vote.