The biggest lesson has been the importance of constantly repeating the mission. It means bringing the team together every week to talk about all of our projects, progress, and vision.

Where I feel the most productive and engaged is when I'm buried in code, buried in some project, tweaking some designs. I'm certainly introverted.

Today there are millions of people making stuff and putting it into the world: that's become part of our identity and it shouldn't be limited to people who fancy themselves writers, or who are particularly witty or talented.

Find a space where you can be creative and a place where you are open for free thinking, you want to enjoy what you are doing and do what you are best at.

We're not motivated by money. We are into this thing that we're building.

For every new feature we add, we take an old one out. A lot of big sites don’t do that, and it’s a problem. Twitter started as a beautifully simple product, but it’s now going the same route as Facebook. The drive to innovate can overencumber and destroy a product.

I want to build something I’d be happy to be employed by 10 years out.