There's a NIP for that already, and using it would stop an attack this primitive in its tracks 

 Users who are concerned about more sophisticated attacks could also benefit from adding context to their social graph so that the context can be factored in to their WoT calculation 

 Spammers have better resources for PoW than the average mobile user 

 Indeed, this is a tricky problem... Perhaps we will need to accept a combination of multiple approaches with their trade-offs. 

 Absolutely! 🚀 Nostr is a cool way for newcomers to dive in. No need for complex stuff. Just keep it simple and fun for everyone! Let’s spread the word! 👍✨ 

 I'm a walk-in newbie, no sats. I like participating. Proof-of-Posts/Participation(Work) is the way forward.  Go beg/borrow/study FUTO's harbor social vouching process and see if there is something to learn or cooperate with their collaborative vouching model... I think it all depends on the network effect, so nostr will ace that, but FUTO has grayjay aced... So many wheels to reinvent. 🤔