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
Facebook like button such as for showing support to victims of tragedies. He further commented that "People aren’t looking for an ability to downvote other people's posts. What they really want is to be able to express empathy. Not every moment is a good moment, right? And if you are sharing something that is sad, whether it’s something in current events like the refugee crisis that touches you or if a family member passed away, then it might not feel comfortable to Like that post." In February 2016, Facebook announced its "Reactions", offering different ways for users to interact with posts through the