What is clubhouse?

I am getting started on Clubhouse and have found myself trying to understand it better.
Clubhouse is a social app for audio, where people can listen to conversations in real time. Currently there is no recording and it heavily geared towards social discovery and algorithmic linking to "stuff" that is going on (now) that you might be interested in.
When you join up, you can express an interest in various topics and follow other people. They encourage you to use your real name and when stuff you are interested in (or people you are following) is being discussed, it lets you know.
When you join a "room" you can see all the other people in the room, you can listen to the speakers (on the stage) and you can raise your hand to alert the admins you have something to say. In the room you can follow other attendees and if your'e not interested you can "leave quietly".
On the platform, there is a lot of talk about start-ups , entrepreneurs and personal branding and has attracted some pretty impressive people to get involved (eg: Elon Musk has popped up talking Robinhood). It feels like early days and I am exploring how it could be used for productivity.
Clearly benefitting from surplus attention during lockdown, I have friends using it for hosting some niche discussions and they really like it.
It is only an iOS app, and is by invitation only - but the chances are you know someone using it and if you share your contacts (in the app) they can vouch for you and bump you to the top of the queue.
I am going to have a play, I am interested in using it for sharing Agile ideas and best practises. Drop me a note if you are interested in getting involved.