<P> The Facebook like button is a feature on the social networking website Facebook . It was first enabled on February 9 , 2009 . The like button enables users to easily interact with status updates , comments , photos , links shared by friends , and advertisements . Once clicked by a user , the designated content appears in the News Feeds of that user 's friends , and the button also displays the number of other users who have liked the content , including a full or partial list of those users . The like button was extended to comments in 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 . </P>
<P> The Facebook like button is a feature on the social networking website Facebook . It was first enabled on February 9 , 2009 . The like button enables users to easily interact with status updates , comments , photos , links shared by friends , and advertisements . Once clicked by a user , the designated content appears in the News Feeds of that user 's friends , and the button also displays the number of other users who have liked the content , including a full or partial list of those users . The like button was extended to comments in 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 . </P>
when was the like button introduced on facebook
when was the like button introduced on facebook
February 9 , 2009
February 9 , 2009