Having a highly homogeneous background, education, values, preferences, etc, in the very early team is better than not - cuts down on time-wasting arguments.

You can have successful teams where people hate but deeply respect each other; the opposite (love but not respect among team members) is a recipe for disaster.

The single most important top-level trend is the shift to mobile.

You can't get married to any one particular plan. That is the biggest lesson I learned at PayPal.

Having a highly homogeneous background, education, values, preferences, etc, in the very early team is better than not - cuts down on time-wasting arguments.

Facebook is so ubiquitous now that it's like another manifestation of the web itself.

If you're building a social product, you're still living in the last century if your product doesn't work on Facebook.