I think that relays could do some sort of spam classification, assign a spam score to notes, and then clients could filter based on this and user preferences. Relays shouldn’t actually delete any content as there is the possibility of false positives.
Discussion
Hard one, indeed! We could probably follow email lead and just have some sort of reputation score that user can chose the threshold of. Maybe Ben have a special DNS service to return it based on npub. 🐶🐾🫡