What are the best examples of payment flows in Farcaster? I want to build something and want to create the simplest payment flow.
Example: I remember the /cookies project having a great payment flow using CB Commerce.
What killer app can *best* be built on Farcaster?
1. Leverages feed for native virality
2. Relies on social graph for trust/authenticity
3. Action is simple enough to be performed in a Frame
What else?