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 News Feeds. The paper's author observes that adjustments in Facebook algorithms have reduced organic reach for non-paying business pages (that have at least 500,000 Likes) from 16 percent in 2012 down to 2 percent in February 2014. A lawsuit was filed in 2010 claiming that Facebook should not allow minors to "like" advertising. Facebook said the suit was "completely without merit". Research shows that Facebook likes can be automatically processed to infer intimate details about an individual, such as sexual orientation, political and religious views, race, substance use, intelligence, and personality. Effectively, individual views and preferences can be revealed even