I often make use of Slack's "reactions" feature to react to a message that has been posted. Emojis correspond to reactions. A "joy" emoji shows that I found a message funny. I like sending reactions to show my thoughts on a message. After a recent discussion in the IndieWeb chat, I found out about something called "reacjis". Reacjis are short reactions to a post. A reacji should be one emoji, just like you might see in a messaging application. I found that some people support sending and receiving reactions similar to those you might see in Slack, Discord, or even Facebook messenger but on their own site.