I want to start a discussion on the topic of members selling items in the network. So far, I have my site set up to receive membership payments via the PayPal API. I am curious regarding the Marketplace App and want some input on actual use cases, how it works etc.

Also, I checked another profile and saw that in its settings the user could install a PayPal API of course I set that profile as an Operator since it was mine from another email address. I want to know it all users can install a PayPal API Client and Secret key, and receive payments or is this limited to an operator, or is this for the purpose of the Marketplace App? I am assuming from what I have read so far about UNA is that users have to have a way to receive payments.

All comments are welcome and more the merrier in this case.