Ok, I'll look into it, I understand that free relays cannot keep up with the massive requests of blocking spam accounts, considering anyone can freely and quickly create an nsec and username. Paid relays may indeed be a solution with micro payments, I am certainly open to this.
Anyway this spam attack is very annoying, and I have no doubt that the Nostr community with its fantastic devs will have an answer to this .
I am fairly new to the space. Are such spam attacks new or is this more common?