Cofounder Lean Viral Wiki 
Startup Lessons Learned
SEPTEMBER 22, 2008
I break the answer to that question down into three engines: Viral - this is the business model identified in the presentation as "Get Users." Here, the key metrics are Acquisition and Referral, combined into the now-famous viral coefficient. If the coefficient is > 1.0 , you generally have a viral hit on your hands.
Startup Lessons Learned
SEPTEMBER 15, 2008
Lessons Learned by Eric Ries Monday, September 15, 2008 The one line split-test, or how to A/B all the time Split-testing is a core lean startup discipline, and its one of those rare topics that comes up just as often in a technical context as in a business-oriented one when Im talking to startups. Expo SF (May. for Harvard Business Revie.
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Startup Lessons Learned
NOVEMBER 7, 2008
I too would be concerned about false negatives, but perhaps this strategy could be integrated into a broader market research strategy that included user engagement, viral marketing, etc which would all be quantifiable under the Google analytics. The Lean Startup Intensive is tomorrow at Web 2.0. A very interesting strategy.
Startup Lessons Learned
SEPTEMBER 12, 2008
vs. sustainable: Compare this to the renewable strategies, like viral marketing, SEO, widgets, and ads, which can scale into 10s of millions of users but are primarily centered around tough, non-user centric work. The Lean Startup Intensive is tomorrow at Web 2.0. Amazing lean startup resources Is Entrepreneurship a Management Science?
Startup Lessons Learned
APRIL 14, 2009
It should be even more important to the founders themselves, because it demonstrates that their business hypothesis is grounded in reality. These founders have not managed, to borrow a phrase from Steve Blank , to create a scalable and repeatable sales process. More on that in a moment. They are close to breakeven.
Startup Lessons Learned
JANUARY 27, 2009
For founders, I think it also has another big attraction: the ability to avoid a lot of " free vs paid " arguments. At a high level, anything that drives virality should be free. To take your specific example about virality - why do we want to have more users sign up? The Lean Startup Intensive is tomorrow at Web 2.0.
Startup Lessons Learned
JANUARY 11, 2009
If you ask an expert in Facebook apps to come help build yours, youll usually hear the same advice: build your app for virality. Thats sensible advice; most people who have made a business on Facebook rely on the viral driver of growth. If you have a virally-growing app, you dont need the extra installs. Expo SF (May.
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