All communication between the buyer and seller in the marketplace takes place in the chat?
The deal goes through a smart contract, but who will moderate sport issues?
Do you mean controversial issues?
All transactions are completely decentralized and anonymous. For moderation I can not say for sure
The PHORE team cannot influence sellers in the marketplace. All responsibility falls solely on the seller.
PHORE may remove prohibited items from the list, but they will still remain in the marketplace.