This document discusses the phenomenon of lurking in online communities and learning environments. It defines lurking as participating but never posting or posting very seldom. It notes that many people participate this way, with estimates that only about 5-20% of community members actively post. It raises questions about whether lurkers are learning from their passive participation and what factors influence why some people lurk rather than actively engage. It discusses various perspectives on lurking as a legitimate strategy for peripheral learning and knowledge brokering, and factors that could encourage more active participation like inclusion, involvement, meaning, competence and positive psychology approaches.