Right now, we're running "Spaces" over at https://spaces.nostrplebs.com. I will be renaming it to Nests in the future as that's the name that everyone seems to like.

Right now, there's no Nostr integration. We are working on this, where you'll eventually be able to "sign in" via your public/private key to pull in your profile data and be able to post to your profile that you're in a Space/Nest. #Soon.