We've changed our internal motto from "Move fast and break things" to "Move fast with stable infrastructure."

If things aren’t breaking, then you’re not moving fast enough. People learn by making mistakes.

Stuff like photos and events and groups - we've built pretty basic versions of those apps to start but they ended up being so much more used because of their social integrations.

When you want to change things, you can't please everyone. If you do please everyone, you aren't making enough progress.

I look at Google and think they have a strong academic culture. Elegant solutions to complex problems.

We used to write this down by saying, 'move fast and break things.' And the idea was, unless you are breaking some stuff you are not moving fast enough. I think there's probably something in that for other entrepreneurs to learn which is that making mistakes is okay. At the end of the day, the goal of building something is to build something, not to not make mistakes.

There's a difference between being obsessed and being motivated.