Quartz: You’re about to help Facebook understand how your private messages make you feel

Quartz: You’re about to help Facebook understand how your private messages make you feel. “The social-media company is now poised to add a new level of precision to their data-collecting engine: Reactions in Messenger. Facebook users will soon be able to give thumbs up, thumbs down, and a variety of other smiley-face-based reactions to individual messages, much like the reactions on public Facebook posts.”