1. Now several large relays have provided information retrieval services. 2. It doesn't seem to be a problem right now. I have been watching everyone discuss the problem of big and small relay these days. Confused, actually. I don't think that's a problem. Nostr users do not need to control their data, users only need to control their accounts and keep their private keys. The account belongs to him. Because all the data has to be signed by the private key before it belongs to this account. While the private key is unique, the data can be copied and pasted. The user's post data can be used and stored by anyone, in order to decentralize the storage of data, the more relay stores these data, the more secure. Whereas censorship is all about blocking users' accounts, the great thing about Nostr is that it can't block anyone's account. You can even set up your own relay service to broadcast outside, as long as someone is willing to follow you, they can receive your private key signed events.