I'll tell you what I've used it for already. Helping people at work who don't know where specific settings are or how to insert wifi information. I made a video doing a quick run through of wifi documentation. Sent it out via iMessage, don't need to come over to someone's office to help now. It's right there in video for them to reference. There's a million ways I'll be using this feature just at work alone... not to mention during my coding sessions when I'm not live streaming.