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 Voyage has feeds based on lists. You can even combine npub and hashtags in these custom feeds. 

The home feed can be set to web of trust if you like. 
 Haven’t heard of Voyage. Guess I should really get an android device for testing. Is this it? 
https://github.com/dluvian/voyage 
 Yup. You can also download it in @Zapstore 
 If you mean NIP-51 lists, then cool — it means Grapevine WoT lists should work for Voyage feeds 👍🏻 

btw how does Voyage calculate WoT? Is it the same standard method as most other clients? Which is: calculate my follows & your followers; calculate the intersection of those two sets; the resulting number of npubs = your WoT score; define a cutoff and anyone above the cutoff makes the list.

I ask bc Grapevine WoT lists use a different method than the standard one. I’m hoping to demonstrate that it will have greater versatility and utility for discovering new content. 
 Yes, it's nip51 follow and interest sets.

Voyage doesn't calculate any WoT score. You're either in the web or not. My old client used to calculate a score of 0% to 100% but I wanted to reduce the amount of data that Voyage has to store. 
 “In the web” means connected by follows? brainstorm.ninja calculates several scores: the Grapevine WoT Score, the standard WoT score, and the degree of separation (DoS) score which equals the minimum number of hops it takes to get from me to Alice, where a hop = a follow.

It takes a lot of resources to calculate these scores, as it sounds like you’ve observed. That’s one of the biggest challenges to bringing WoT to nostr.

And it’s why I am building brainstorm.ninja: we calculate these scores and export them as NIP-51 lists so apps like yours don’t all have to calculate them from scratch. That way, users will be able to experiment with the various methods of list generation and see which methods work best for them. All with no extra work on the part of clients like Voyage! 😃