I've been into nostr recently and decided to add nostr posts into the search index on https://realsearch.cc
If you've tried to use nostr, you'd agree how non-trivial it is to find people to follow or content to discuss. Searching by keyword really helped me to discover interesting conversations and questions that people had there. The service follows most of big relays and new results should show up in real-time.
Would you give it a try?
Please let me know if this thing adds any value.