The document discusses information architecture (IA) and how it must adapt to changes in how people access and share information online. It emphasizes designing architectures that support distributed content and engagement across networks rather than just websites. Effective IA involves understanding user needs, content, and the broader online context. It is an iterative process of research, conceptual modeling, content analysis, design, and continuous testing and optimization. Success requires listening to conversations and providing useful, shareable content while also measuring different levels of user involvement, interaction, influence and intimacy online.