I work in Marketing in Gaming (first at Twitch from 22-26, then at NVIDIA until just recently when I started a Creative Agency called OFFBRAND with my friends.
My stream is a mix of chatting, Marketing talk, learning stuff, playing games w/ friends, and getting weirdly obsessed with some kind of challenge.
Don't be an asshole and you should fit in fine here :)
It's this indie little website called "YouTube" that you've probably never heard of.