I think @brugeman was working on this but I haven’t seen any new developments on it for a while.  

 interesting, I’d like to check that out 

 https://nostr.band 

 There are others too. @primal and @damus both have great search built in too 

 Anyone using a PageRank-like algo to rank results? 

 https://trust.nostr.band/ 

 Yup, exactly what I’m looking for. 🙏🏼