Google search is effective because it's constantly crawling the web and indexing everything it finds.
We need an indexing service that crawls Nostr relays.
Following discussion between nostr:npub1t3ggcd843pnwcu6p4tcsesd02t5jx2aelpvusypu5hk0925nhauqjjl5g4 and nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m
Discovery is key. Google has become worse at it so Nostr needs to become better at it. Nostr needs a free and open source search engine that performs gradually better over time.