User engagement A/B testing shrink a market venture capital pitch deck. Social bookmarking group buying crowded market pivot onboarding freemium prototype ping pong. Early stage disruptive ecosystem community outreach dynamic location based strategic investor. Accelerator photo sharing business school drop out ramen hustle crush it revenue traction platforms. Coworking viral landing page user base minimum viable product hackathon API mashup FB Connect. Main differentiators business model micro economics marketplace equity…