1) The community quadrant (to understand how community differs from other groups of people who interact with a product) 2) The community funnel (to understand what makes a community compelling to prospective members).
1/ They create a built-in source of real-time user feedback, which is critical for building a product people really want. 2/ They foster friendships rooted in an affinity for your product, which drives lifetime value and new customer referrals.