Abstract: A system, including apparatuses and methods, and a service employing such system for identifying opportunities and enabling persons to become associated with opportunities in which persons can make an impact, for identifying individual and collective synergies and commonalities between persons, opportunities, organizations, groups and partners, for capturing and monitoring the impact of persons associated in opportunities, and for visually presenting the impact of persons, opportunities, organizations, and the system through multi-level aggregation, or roll-up, of key performance indicator data. The system orders synergistic matches and permits user selection, via a slider control, of the extent of synergy to be used in selecting and displaying matches. The system also permits the custom weighting of key performance indicators, or metrics, by different users to account for the relative importance of various metrics to such different users.