> “Could we expand web of trust by having users verify other npubs?  Have a "yeah this guy's legit" button or something.”

This is the way… but can it scale?

We are working on a couple NIP proposals. One will allow users to “sign” the contents of each other’s (identifying) profile fields, verifying that they are not scam or bot accounts. In this way, “trust” is relative to the size and participation of your network. 

… with social onboarding, trust in this manner is instantly applied to new accounts, greatly accelerating adoption.

But still… curation is key.
https://i.nostrimg.com/c9d737e31af1fabc355459e7ade27a6b0ec90704e630a2b23a64f7301dc8f90d/file.jpeg