Video Stream Interaction

I'd love to see a method for stream viewers to interact with the streamer. An overlay of your friends' cursors and mark ups would be quite useful. (With permission)

Imagine you're confused on how to do something on the web? Stream with a friend and they can walk you through it with their cursor.

Trying to match settings on a game with a friend? It'd make things much easier for them to be able to point.

Pretend you are playing an RTS game. Your friend says, "Move them there and surround it!" Them being able to paint would help convey ideas!

The paint could fade over time, the cursors could be different colors, and everything would be up to the streamer's decision.