Mark on Nostr: I agree it will add friction for newcomers - hopefully much of that would be overcome ...

I agree it will add friction for newcomers - hopefully much of that would be overcome with better clients and bitcoin payments being more ubiquitous.

My general thought on this is any method to prevent spam that doesn't involve some kind of real-world cost is going to a tit-fot-tat battle between relays/users and spammers.

I've not considered this in any depth, but the two possible imposable real-world costs I see that are permanent spam solutions are burning sats or processing power.

Maybe new users could use processing power to start, and established users could choose to burn sats instead for convenience.