Jack Dorsey Chairman after Dick Costolo replaced Williams as the CEO. On June 10, 2015, Costolo announced that he was resigning as CEO of Twitter, effective July 1, 2015. Dorsey would assume the post of Interim CEO upon Costolo's departure. He was named permanent CEO of Twitter on October 5, 2015. On the day after the controversy about Twitter's new algorithms for tweets, Dorsey responded to the trend, saying it was only a hoax. In May 2016, Dorsey announced that Twitter would not count photos and links in the 140-character limit to free up more space for text. This move was an
Fake news website an open letter on the Poynter Institute website to Mark Zuckerberg, imploring him to utilize fact-checkers to identify fraud on Facebook. Signatories to the 2016 letter to Zuckerberg featured a global representation of fact-checking groups, including: Africa Check, FactCheck.org, PolitiFact.com, and "The Washington Post" Fact Checker. In his second post on the matter on 18 November 2016, Zuckerberg responded to the fraudulent news problem by suggesting usage of fact-checkers. He specifically identified fact-checking website Snopes.com, and pointed out that Facebook monitors links to such debunkers in reply comments to determine which original posts were fraudulent. On 15 December 2016, Facebook