what is one Minimum Viable Platform that could be built on Farcaster today with the existing user base?

i.e. if someone were to build this platform it could actually start to compete with an existing centralized product

Solving public goods value capture. | /impact | book.abundance.id

Twitter but in theory more as app scales and feature set expands

hmm but what centralized platform is it competing with?

I mean compete w a centralized platform (eg Yelp, Amazon, Airbnb etc), but something we can actually compete against w FC's existing user base