A couple of the feature videos seem to have disappeared in the last year. This one is okay.

Basic idea is choosing whom you share content with, and curating/filtering who's content you see.

Wicked cool to use, but I can't even conceive of how it would work on Nostr/clients.

Communities is a step in the right direction though.
https://youtu.be/GUywKEtXX2c?si=cDWy0YXvRFV7VekK 

 Contact lists also close-ish to the mark. 

 Got you. Private relays are a tool that maybe allow approach of circles. For instance you can set up a family relay, a work relay etc.. 

 Interesting. 🤔

That's something I might be able to pull off, but definitely not my normies.

This is the most solid idea I've heard yet though.
Progress. 🤝

I wonder if it would be possible to set them up like a special group DM for he broadcast, and a special filter(s) for the receive. 

 One approach involves switching relay sets/contexts, somewhat similar to how you might be in multiple discord servers.