Continuous Deployment Developer SEM 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
NOVEMBER 7, 2008
Oops - there went several precious weeks of development effort down the drain. Dont worry about selecting particularly good keywords, if youre new to SEM. And if you dont know who your customer is, perhaps some customer development is in order? Turns out, there was aboslutely no demand whatsoever for that particular product.
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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 Entrepreneur’s Guide to Customer Development ► June (3) What is a startup?
Startup Lessons Learned
SEPTEMBER 15, 2008
The goal is to have split-testing be a continuous part of our development process, so much so that it is considered a completely routine part of developing a new feature. If its part of a viral loop, its probably trying to get them to invite more friends (on average). This is not what I have in mind.
Startup Lessons Learned
OCTOBER 7, 2008
On the web, we have many of these channels: SEM, SEO, world of mouth, PR and viral. If your app has strong word-of-mouth or viral components, your retention drives new acquisition, and its not so important to have good placement in the store. Or if your lifetime value is high enough, you can just keep spending on SEM.
Startup Lessons Learned
SEPTEMBER 18, 2008
Even with only a few months of development, third parties have crammed every single category in the store full of apps. All I see is a name, an icon, a price, the developers name, and a review star-rating. On Facebook, viral distribution has proved decisive. Figuring out which apps are going to be any good is almost impossible.
Startup Lessons Learned
MARCH 13, 2009
Do some Customer Development instead. If the viral coefficient is 0.9, Start with a five-dollar-a-day SEM campaign. Hold yourself and your PR agency accountable for developing a high level of understanding of these questions ahead of time. Help you raise money. But dont be too sure. keep iterating until its 1.1
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