The best part of this book in my opinion is the section where they describe every step they have to take when implementing a new feature. It clarifies the advice they give about saying 'no' to new requests initially (because even a seemingly-tiny feature can involve a lot of work to make sure it launches successfully, you have to focus on the most important, most requested features).
You can see that principle at work on this site. Over time they'll know what the most important features to add are based on how we use it.
You can see that principle at work on this site. Over time they'll know what the most important features to add are based on how we use it.