This document discusses trends in online digital communities and networks. It explores how technology has changed how people interact and participate together. Communities can take many forms like networks, communities of practice, or independent learners. Emerging roles for people online include community leaders, technology stewards, and network weavers. The document also examines tensions between individual vs. group participation and interacting vs. publishing online. It provides examples of tools that can address these tensions and help people participate in online communities.