FILE - In this May 16, 2012, file photo, the Facebook logo is displayed on an iPad in Philadelphia. Facebook is acknowledging something many already know: Passively scrolling through social media can make you feel bad. The social media giant whose platform has become a daily addiction for hundreds of millions of people sheds light on both sides of the issue a blog post Friday, Dec. 15, 2017. (AP Photo/Matt Rourke, File)
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