This document discusses guidelines for using social networking and Web 2.0 tools in education. It provides examples of Web 2.0 services like wikis, blogs, and podcasting that can enable collaboration. While these services are popular outside the classroom and useful for learning, the document outlines some risks of using external services, including issues with content ownership, data protection, accessibility, and assessment regulations. It recommends educators consider UCL alternatives, read third-party service policies carefully, and make external tools optional for students.