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
History of Facebook a startup created by Gmail's first engineer Paul Buchheit. In February 2010, Facebook acquired Malaysian contact-importing startup Octazen Solutions. On April 2, 2010, Facebook announced acquisition of photo-sharing service called Divvyshot for an undisclosed amount. In June 2010, an online marketplace for trading private Facebook stock reflected a valuation of $11.5 billion. On April 12, 2012, Facebook acquired photo sharing service Instagram for approximately $1 billion in cash and stock. On March 8, 2013, Facebook announced that they acquired the team from Storylane, but not the product itself. On February 19, 2014 Facebook announced its acquisition of WhatsApp Inc., a