France Product Product Development Viral 
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 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. Thoughts on scientific product development Lo, my 5 subscribers, who are you?
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Startup Lessons Learned
NOVEMBER 7, 2008
Thats the conclusion Ive come to after watching tons of online products fail for a complete lack of customers. Our goal is to find out whether customers are interested in your product by offering to give (or even sell) it to them, and then failing to deliver on that promise. Nothing made any difference.
Startup Lessons Learned
APRIL 14, 2009
This may sound crazy, coming as it does from an advocate of c harging customers for your product from day one. Their product definition fluctuates wildly – one month, it’s a dessert topping, the next it’s a floor wax. In fact, this company hasn’t shipped any new products in months. What’s going on?
Startup Lessons Learned
SEPTEMBER 15, 2008
In my experience, the majority of changes we made to products have no effect at all on customer behavior. This kind of result is typical when you ship a redesign of some part of your product. Without split-testing, your product tends to get prettier over time. First of all, why split-test? One last note on reporting.
Startup Lessons Learned
JANUARY 27, 2009
These are companies that generate revenue by offering a free product with an upsell or premium version. 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? Is it that they act as free advertising for our premium product?
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.
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