You can see it working in this livestream of MoneroTopia a few months ago. Really works just like a regular superchat.

(https://youtu.be/CUN_Lv2R3U0?t=7463)

Cool to see this. A while ago I made a Reddit tipping bot with XMR, and one of the great parts was the recipient didn't yet need to create an account- if you received a tip, we would hold it for you and send a message telling you to register.