Do I understand correct this doesn’t use nip-51 bookmarks right? so I can just republish any post here and the relay does magic to show only what I published there?
https://bookmarks.relays.land/ is now operational. You can republish any note to wss://bookmarks.relays.land/ and it will be saved in a special place tied to your account.
But for technical reasons I can't create a special place for every person, so they're limited to 500 for now and you have to pay 5000 satoshis for anti-sybil reasons. If you like the idea and wants to use it but doesn't want to pay 5000 satoshis please message me on NIP-17.
https://jumble.social/ has the "republish to" feature today, and I heard https://yakihonne.com/, https://nostur.com/ and https://nosotros.dev/ are working on it. Any other client?
Discussion
Yes, it has no relationship with NIP-51 whatsoever, it's just a relay that stores notes.