Churn Rate Lean Product Development Viral 
Startup Lessons Learned
MARCH 21, 2013
Lean Analytics is the latest addition to the Lean Series. If you're working on the Sticky Engine of Growth , you're focused on very different metrics from those that you care about in the Viral Engine of Growth. Similarly, a two-sided marketplace cares about different things from a traditional e-commerce product.
Startup Lessons Learned
SEPTEMBER 13, 2010
But notice what’s not listed: messages sent per person, churn rates of active users, or activation rate of new user. Is the company growing because of an amazing viral loop paired with a strong engagement loop? Is the company growing because of an amazing viral loop paired with a strong engagement loop?
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