Facebook Messenger adds live video to augment your messages

A good rule of thumb in software these days is that any social product without a video feature is going to get one eventually. Another good rule of thumb is that any feature developed by Snapchat is coming soon to a Facebook product near you. Enter "instant video," a twist on Snapchat's video calling feature that lets you share a live stream from inside a traditional text chat.
Facebook Messenger has had a FaceTime-like video chat option since May 2015. But the company wants to encourage ev