[danShumway]

Pretty exciting stuff, still trying to wrap my head around some of the technical possibilities outside of chat. Just to be clear, a room can be contained in multiple spaces, right? Or even, if I'm understanding it correctly, in multiple places in a hierarchy in the same space?

The Element blog post talks about setting up admin spaces and community spaces. So if rooms aren't exclusive to a single space I could build custom, private spaces that pull rooms from multiple different communities I'm a part of.

That's a really cool feature that Discord doesn't have right now.

[vlmutolo]

There are lots of different things you can do with Spaces. But yes, you can build your own Space out of arbitrary rooms you don't own without anyone's permission.

Then there are what you might call "canonical" spaces, where space A labels space B as its child, and B labels A as its parent. Then you know that the relationship between the two is mutual, and clients can take that into account.

But you're free to create your own Spaces that are the parents of other rooms, where those rooms/spaces are unaware of the Space you created.

[ajayyy]

This was possible in the old Matrix community system as well, it acted more like a "filter" than a community though.