Facebook like button years of questions from the public about whether it had an intention to incorporate a "Dislike" button, Facebook officially rolled out "Reactions" to users worldwide on February 24, 2016, letting users long-press on the like button for an option to use one of five pre-defined emotions, including "Love", "Haha", "Wow", "Sad", or "Angry". Reactions were also extended to comments in May 2017. The like button is one of Facebook's social plug-ins, in which the button can be placed on third-party websites. Its use centers around a form of an advertising network, in which it gathers information about which users visit
Criticism of Facebook ConnectU founders as part of the settlement. ConnectU argued that Facebook represented itself as being worth $15 billion at the time, due to the post-money valuation arising from Microsoft's purchase in 2007 of a 1.6% stake in Facebook for US $246 million. Facebook announced that valuation in a press release. However, Facebook subsequently performed an internal valuation that estimated a company value of $3.75 billion. ConnectU then fired the law firm Quinn Emanuel that had represented it in settlement discussions. Quinn Emanuel filed a $13 million lien against the settlement proceeds and ConnectU sued for malpractice. On August 25, 2010,