But there’s little evidence that what the firm did with that Facebook data was all that fruitful. There are at least five ways in which Facebook’s network and data were used to bolster Trump’s campaign. But each month in the United States and Canada in the fourth quarter of 2016, 231 million people used Facebook. Trump’s campaign used Facebook’s tools, and it championed Facebook’s results. Facebook said in September that the Russians spent $100,000 on Facebook ads.

Source: Washington Post March 22, 2018 18:22 UTC