Periscope is an interesting app. It is connected to Twitter and right now is really being abused to an extent by trolls who just want to see some boobs, but if you can get past that occasional inconvenience, it's really fun and you can find some very interesting people and sayings to look in on. The Periscope app lets you see someone elses live video and comment to those people (if they have it set to accept comments). I Periscoped from the beach the other day and walked around a bit, showing everyone the sea turtle nest the was near us and the seagulls as I tried to feed them from my hand! I really encourage you all to try the Periscope app and follow me!