Lean Analytics: Use Data to Build a Better Startup Faster (Lean (O'Reilly))

The revenue source is simply how you make money.

the median ratio of views to shares is just nine.

“There seems to be a hard threshold at about 15–18 seconds, where after that users simply won’t wait, and traffic falls off dramatically,”

with interviewees, and letting them tell you what problems they have. You’re not suggesting problems and asking them to rank them.

The indicator should come early in the user’s lifecycle or conversion funnel.

Treat your paying users as a separate customer base and track their behavior, churn, and revenue separately from your nonpaying ones.

you need stickiness, which comes from a good product. You need to find out if you can build a solution to the problem you’ve discovered. There’s

The maximum number of concurrent users will be 10% of the number of daily users.

There are three kinds of virality: Inherent virality is built into the product, and happens as a function of use. Artificial virality is forced, and often built into a reward system. Word-of-mouth virality is the conversations generated by satisfied users, independent of your product or service.

Lean Startup helps you structure your progress and identify the riskiest parts of your business, then learn about them quickly so you can adapt. Lean Analytics is used to measure that progress, helping you to ask the most important questions and get clear answers quickly.