Seems like the link with the specific ID in my above comment has become the de-facto shared room now, at least as long as my comment stays at the top :)
Hmm, what I was thinking of was that everyone seemed to be competing with each other to click random UI elements on the virtual browser as rapidly as possible, I assume because there wasn't a way to speak with one another / coordinate. Or maybe I just missed the chat area?
Yeah we kept the MVP lean and didn't add chat or audio/video calling. Our goal (which we're not meeting) is to keep the Three.js example line count below 200.