BS DetectorBS Detector is a browser plugin based on a list of misleading news sites initially begun by Melissa Zimdars for her communications students, but blossomed into a public project as the US Presidential election in Fall 2016 became more influenced by misleading sites. Now a team of journalists, librarians, and scholars updates the list on which it is based. The tool provides a red warning banner both for websites and for news articles shared in social media.