This document discusses factors that can help establish trust in online collaborations. It presents a pattern language approach with patterns relating to context, content, process, and leadership. Specific patterns described include Context-setting Entrance, Greater Gathering, Abstract Social Proxy, and Reminders of Shared Goals. These patterns aim to recreate in online settings some of the trust-building aspects of face-to-face interactions, like shared physical context and rituals, and were applied in a series of large online events called "Jams".