right here’s fb’s guide to how its ‘Trending subjects’ device works Posted on May 20, 2016 by Deep fb CEO Mark Zuckerberg Robert Galbraith | Reuters fb CEO Mark Zuckerberg A document posted in the dad or mum today includes a training file for facebook editors that outlines how they ought to curate the “trending” headlines tool. instructions Read More right here’s fb’s guide to how its ‘Trending subjects’ device works