Product Development Programming 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
SEPTEMBER 18, 2008
On Facebook, viral distribution has proved decisive. Those companies who have learned to build apps that optimize the viral loop dominate in every category where they compete. If you sell an online service that solves a defined problem, you can compete in SEO or SEM. There are other models, in other distribution channels.
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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. Thoughts on scientific product development Lo, my 5 subscribers, who are you? for Harvard Business Revie.
Startup Lessons Learned
NOVEMBER 7, 2008
Dont worry about selecting particularly good keywords, if youre new to SEM. SEM only gets at one segment of users, and for a brand new product, you presumably need some skill at marketing in general and adsense in particular to get any useful info. Just put in your credit card. I used to use $.05, A very interesting strategy.
Startup Lessons Learned
SEPTEMBER 15, 2008
If its part of a viral loop, its probably trying to get them to invite more friends (on average). This gets me into trouble, because it conjures up for some the idea that product development is simply a rote mechanical exercise of linear optimization. Thoughts on scientific product development Lo, my 5 subscribers, who are you?
Startup Lessons Learned
SEPTEMBER 29, 2008
Either way, you would have been better off focusing your split-test on high level metrics that measure how much customers like your product as a whole. Thoughts on scientific product development Lo, my 5 subscribers, who are you? Learning is better than optimization (the local ma. for Harvard Business Revie. Amazon PostRank
Startup Lessons Learned
MARCH 13, 2009
If the product needs to be tweaked just a little bit in order to convert users into customers, you want to figure that out before the launch. If the viral coefficient is 0.9, And if your product doesnt retain customers, whats the point of driving a bunch of them to use it? Instead, do your product launch first.
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