The document discusses three projects - PERSoNA, Planet, and Streamline - that aim to facilitate the sharing of teaching practices through social technologies. It provides an overview of each project's goals and approaches. The key points are: 1) PERSoNA, Planet, and Streamline seek to share both educational content and experiences using tools like wikis, blogs, and social networks. 2) Planet Wiki is highlighted as a tool for collecting case studies, identifying teaching patterns, and supporting collaboration between project teams. 3) Effective sharing of practices requires not only disseminating content but also providing context about how and why certain approaches were used.