We're building on different types of white-listing in Zapstore, yup. But I don't care what other apps/communities do with their methods of white-listing. Only ting that'd be nice is some kind of general flow or tag/reference to the "place" to get whitelisted across interop apps, in the case of communities.

Check out @Vertex, it's my take on how to do spam prevention. npub.world, @Zapstore and many other clients use it to remove impersonators, power search, get recommendations of who to follow.