For the most part they're dead. I've had one or two people randomly join them on impulse (which is the idea behind them, anyone can just jump in). More often than not they ended up being tagged open, but those who actually participate are people I mention it to in the chat box, or plotting, etc.   I think people prefer to talk out a basic idea, or get the formal invite to a thread, nowadays.
    • Agree
    • I read this!
    2