Facebook's Messenger is continuing its quest to add as many features as possible. The latest additions are reactions (which was in testing for a while) and mentions. Both of these will be rolling out across the world "in the coming days". You'll be able to react to any single message in a thread, and choose between seven different reactions to do so. To add a reaction you press and hold any message and then tap to select one of the following emojis that show up: love, smile, wow, sad, angry, yes, and no. Note that those last two ones can also easily be interpreted as "like" and "dislike",...
Source: http://www.gsmarena.com/facebook_messenger_gets_reactions_and_mentions_in_conversations-news-24162.php
