Who are the major participants (i.e., suppliers, buyers, competitors, substitutes and potential new entrants) in the on-line dating industry? How much of the industry profits/power do each of participants/competitive forces extract from/have over the industry? Why? What are eHarmony's key resources and capabilities and how do they link to the strategic choices on the sources of competitive advantage (cost or differentiation) to pursue? How is eHarmony positioned (or leveraging its key resources and capabilities and sources of competitive advantage) vis--vis the industry's five forces? Is eHarmony's competitive advantage temporary or sustainable? Which growth strategy should eHarmony pursue? Why