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 Criticism of Facebook Criticism of Facebook relates to how Facebook's market dominance has led to international media coverage and significant reporting of its shortcomings. Notable issues include Internet privacy, such as its use of a widespread "like" button on third-party websites tracking users, possible indefinite records of user information, automatic facial recognition software, and its role in the workplace, including employer-employee account disclosure. The use of Facebook can have psychological effects, including feelings of jealousy and stress, a lack of attention, and social media addiction, in some cases comparable to drug addiction. Facebook's company tactics have also received prominent coverage,