Today they introduced nicknames[1], chat colors, and custom emojis (replaces the &quot;like&quot; button) on the mobile messenger apps (haven&#x27;t checked web).<p>So my guess is that the Messenger guys just try to add whatever they think might be cool and then see if it works.<p>As for their goal... it&#x27;s just so people spend more time on Messenger of course.<p>[1] If you are in a chat (1-on-1 or group) you can rename anyone with a nickname that will show up when they talk instead of their Facebook name.