The WoT settings has cleaned up pretty much any spam I used to see. As for spotting bots that's up to each person to use some intuition Anything that is as useful (and threatening to the powers that shouldn't be) is going to be attacked with spam and bots. Its a dance that's ever evolving, but where there's a will there's a way when it comes to decentralized free communication

With nostr you can share your npub with another person privately. This is important but not well understood when people are encouraged to create accounts for everything.