Giving the viewer something he wants to come back to is key. We know this from the days of TGPs and now with Tubes. Everything is about consumer retention.
https://www.youtube.com/channel/UCsg...2ljEixyulzOnUQ
https://www.youtube.com/user/JamesNintendoNerd
https://www.youtube.com/user/FRANKIEonPCin1080p
Look at the number of subscribers.
It's all about delivering to the customer something he want to return to. That's why you're on GFY, this thread, and not elsewhere.