Brandon Silverman, the founder and CEO of the Facebook-owned analytics tool CrowdTangle, is leaving the company, according to an internal farewell post to colleagues posted Wednesday that was seen by The Verge.
His departure comes as Facebook is under pressure to publicly share more data about the content that spreads on its service. CrowdTangle, a free tool that lets anyone track popular posts across Facebook and Instagram, is at the center of that debate. In recent years, it has been used to show that far-right personalities are regularly the most engaged-with accounts on Facebook. That irritated some Facebook executives who felt that the data being shared by CrowdTangle was incomplete, and earlier this year, the CrowdTangle team was…