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 content using Facebook's video platform, and in some cases, achieving higher levels of engagement and views than the original YouTube post. Videos hosted by Facebook are given a higher priority and prominence within the platform and its user experience (including direct embedding within the News Feed and pages), giving a disadvantage to posting it as a link to the original external source. In August 2015, Facebook announced a video-matching technology aiming to identify reposted videos, and also stated its intention to improve its procedures to remove infringing content faster. In April 2016, Facebook implemented a feature known as "Rights Manager",