How do I use emojis in Conversations?
To react to a question or an answer with an emoji, find the post to which you want to respond. 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 emoji that most closely reflects your desired response. The emoji will appear at the bottom of the post. You cannot add an emoji to your own posts. Once an emoji is added it cannot be removed. The emojis currently available are a lightbulb, a key, and a heart. A lightbulb could be used to indicate a post is particularly illuminating, a key could indicate a key concept, and a heart can indicate that the viewer likes a post.