This document discusses trust management in peer-to-peer platforms. It outlines different levels where trust can be catered, including the transaction level, user level, and marketplace level. At the transaction level, platforms can assess benefits, risks, and guarantees. At the user level, platforms can focus on authentication, ratings/reviews, transaction history, and screening. At the marketplace level, platforms can build trust through their identity/image, relationship with users, and platform/application design. Examples of trust management approaches from platforms like BlaBlaCar, Airbnb, TaskRabbit, and others are also provided.