I've found that most tech these days are dog fooding their own products. I've been a happy participant on Secure Scuttlebutt for the last 5 years, where approximately a third of the conversation is about Scuttlebutt, where the protocol should be going, what's going on with each client, and coming to consensus on how to distribute funds or encourage further growth.
The same thing is true for Disaster Radio, SudoMesh and other mesh networks...you use the technology to talk about the technology, coordinate growth and goof around with inside jokes.
I'd be surprised if soon electric cars (...domestic robots, razor crest spacecrafts) didn't all have internal forums where folks talked about the technology itself.
So the question is what are you interested in connecting with people about? Robotics clubs have a different needs for interacting than say the folks interested in the Gemini protocol.