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 button enabled, the user's web browser connects to Facebook's servers, which record which website was visited, and by what user. A week after the release of the social plugins, Facebook announced that 50,000 websites had installed the features, including the like button. Five months later, the number had increased to 2 million websites. In December 2010 and in the United States, Microsoft's Bing search engine partnered with Facebook to identify which links in search results have been "liked" by the searcher's Facebook friends. Google's social networking service Google+ utilizes a similar concept, the "+1" button. The number of "likes" on