I recently got hooked on the app Periscope. My husband found someone who "scoped" one of the Bruce Springsteen concerts at the Barclays Center and we ended up watching the last hour of the show.
Periscope is basically a streaming video service with text commenting and feedback. The videos can be as short as 1 minute or as long as 90 minutes. When you follow a user you get a notification that a live stream is about to start and you decide whether to watch or not. You can ask questions or make comments during a live stream. Video replay is available for 24 hours although this seems to be changing.
I've visited Hong Kong three times in my life and I found two Periscopers who stream everyday: Penguin6 and John Ho. Penguin6 (first name is Andrew) is an American living the expatriate life with his family in Hong Kong (his wife works in the financial industry) and he provides the non-Asian perspective. John Ho is a Hong Kong native who provides insights into daily life and the Chinese culture. John hosts video chat sessions to answers your questions. One reason I enjoy their video streams is that they don't focus the camera on themselves, 95% of the time the focus is where they are and what they are doing.
I am not a You Tube person but Periscope really has intrigued me. Have any of you tried Periscope?