Twitter launches crowd-sourced fact-checking project with 'helpfulness score'

Twitter is enlisting its users to help combat misinformation on its service by flagging and notating misleading and false tweets. The pilot program unveiled Monday, called Birdwatch, allows a preselected group of users – for now, only in the U.S. – who sign up through Twitter. Those who want to sign up must have a U.S.-based phone carrier, verified email and phone number, and no recent Twitter rule violations.