Select Add a Reaction.
To react to a question or an answer with an emoji, locate the appropriate post. Select Add a reaction or the smiley face at the bottom of the post. A set of emojis—small icons that can provide a short-hand response to a post—will appear.
Select the desired emoji.
Select the emoji that most closely reflects the desired response. The emoji will appear at the bottom of the post.
Note: Users may not add an emoji to their own posts.
Emoji displays.
The selected emoji displays at the bottom of the post.