It doesn't really work anywhere yet. But it's hopefully a start. You can see it implemented a little bit in Amethyst, flycat, satellite.
Discussion
It'd be nice if we could use nostr as a back end for websites like activitypub but more decentralized. Then if the website pisses you off, you just take your private key with you elsewhere
https://zapddit.com also I think
They all work, but as always we need more content and more development time.
I would not say it works in Amethys. Communities I create in zappit don't show up. Post are missing. There is no approve option. No real search option.
Also having to wait before your post is approved is border line not working. When you post to reddit you are used to your post being there immediately. You even have to approve your own post I believe. It is very unusable as it is right now imo. I'm grateful it's a start but I think a version that approaches lemmy in functionality is going to look a lot different tbh.