There have been rumours for some time that Facebook was going to introduce a 'dislike' button. Once you scratched below those headlines it was clear that they would really be introducing 'reaction' buttons rather than a negative 'thumbs down'.
They've been piloting 'Reactions' in Spain and Ireland, and it looks like the rest of the world will soon have “love”, “haha”, “wow”, “sad” or “angry” buttons at their disposal to react to posts, as well as the old 'like'. These will all be emoji buttons - making this a mobile-friendly move.
This is great news for marketers of course, as these different options will give community managers a better way to judge the reception of their content. Currently, some of the metrics of engagement include number of likes, comments, and shares. With the introduction of 'Reactions', there will be a clearer sense of what moods dominate, or perform best, on your page's content.
I expect we have the usual sort of user grumbling to look forward to when 'Reactions' roll in - it wouldn't be a proper Facebook change without it!