Social network analysis: uncovering the secrets of information flow for our information architecture. ozia09 Mia presents a case study in which she explores the use of Social Network Analysis (SNA) to model her users’ network and map the relationships between people, groups, organisations and information. She will explore how understanding the degrees of centrality and closeness in the network can uncover the flows of knowledge between users to create a deeper understanding reflected in Personas. Agile Personas are "skinny" and are fleshed out as you uncover more information during the project.