This document discusses lurkers in online learning communities. It defines lurkers as those who participate by observing but do not post or post seldom. Research suggests most community participants fall into this category, with estimates that 90% lurk, 9% occasionally post, and 1% post frequently. The document examines factors that influence lurking behavior and discusses strategies to encourage more active participation, such as fostering inclusion, providing feedback, and using interactive activities and methods like brainstorming and group discussions. The goal is to increase learning and improve the experience for all community members.