Facebook June 2010. After extensive testing and 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. Facebook Messenger is an instant messaging service and software application. Originally developed as Facebook Chat in 2008, the company revamped its messaging service in 2010, and subsequently released standalone iOS and Android
Facebook like button Facebook can serve as a measurement of interest and/or popularity in a particular brand, product or personality, though there have also been reports of the "overblown importance" of likes. Due to social media's role as an influential way of shaping reputations, there exists companies specializing in selling "likes" from fake accounts. This has caused issues for companies advertising on Facebook, due to receiving an abundance of likes without credibility that distort actual user metrics. Facebook's Terms of Service agreement states that users are only allowed to have one personal page, and it has an ongoing "war" against fake accounts. A