The document discusses building virtual learning communities. It defines communities as groups bound by shared interests and goals. Trends show the importance of social learning and using technology to increase communication speed. The 4L model describes participant roles as linking, lurking, learning, and leading. Different types of virtual communities are outlined based on relationships, place, passion, and memory. A multi-channel approach is suggested using tools like blogs, wikis, and online platforms. Characteristics of healthy communities include consistent participation, a sense of ownership, and viewing the organizer as part of the community rather than its owner.