If I learned one thing working at Facebook: If users are trying to use your app in a certain way, get out of their way and let them.

I have two iPhones, one for day and one for the night.

We want to make sure the stories that show up in Path are both good stories and are a big part of people's lives.

If I learned one thing working at Facebook: If users are trying to use your app in a certain way, get out of their way and let them.

Simple and intuitive design is what inspires and drives me.

Simplicity is about clarity of thought and being willing to stay in a problem long enough to come to a solution, though it could be right in front of you.

My best entrepreneurial advice is to start.