It's a trust score from a Web of Trust provider (NIP-85), Brainstorm/GrapeRank by default. The provider ranks pubkeys from the follow and mute graph around you. Amethyst downloads those scores (~150k "trust cards") and checks them locally, so it doesn't query relays for each profile. The minimum sc...

You will just see posts, replies, and notifications from accounts further away from your social circle

nostr:nprofile1qqsqterynqedlwx3h75paf7t78yjcncu65zjhlyd23jm5az25ma9awqrsng6j As far as I know it's a trust score from your NIP-85 provider. Since v1.18 anyone under the minimum you set lands in New Requests for DMs and drops out of curated notifications, so I'd start low.