nostr is like the real world. you can't trust anyone to not play sock puppets and manipulation games.
those ranks on sites like facebook and Xitter don't include the people they secretly ban (shadowban) either.
I came to the same conclusion about 1y ago, and that's why nostr:nprofile1qqstq4j6pk2sgaupru6l7ah9nq0dueafq356jllwcy7uzlek9yx7hlspz4mhxue69uhhyetvv9ujuerpd46hxtnfduhsz9mhwden5te0wfjkccte9ehx7um5wghxyctwvshsnpjku2 offered this algo from the get go.
Real-time personalized pagerank.
Discussion
sure, it's a trusted service. The fact that it's decoupled from the social layer means there will be competition.
Also, every response is signed so if I misbehave you can potentially prove it later.