https://www.theguardian.com/technology/2017/sep/27/mark-zuckerberg-facebook-2016-election-fake-news >Facebook founder, who called it ‘crazy’ to suggest misinformation on site affected voters, describes change of heart as company provides ad content to Congress >Mark Zuckerberg said he regretted dismissing concerns about the Facebook’s role in influencing the US presidential race, his latest acknowledgement that misinformation on the platform has affected elections.