This document discusses different types of virtual communities in public administrations and how they can be improved. It describes how communities can form around conversation and how their goals may be individual, such as social learning and relationships, or organizational, such as knowledge management and digital reputation. It outlines principles for community design, including balancing openness and focus areas. Different communities are oriented towards content, expertise sharing, or relationships. Openness, natural network evolution, and boundaries are discussed as keys to community success.