The companies that I really admire the most are the ones that have a deep visceral understanding of why people use their service, and they figure out ways of making money that are completely consistent with how people are feeling and what they are doing at the time.

I always describe Facebook and Twitter to some extent as 'them time': it's time about the world and what's outside of you. Pinterest, for a lot of users, is 'me time.' What do I want my future to be? Who am I? What are the things I want to do?

I hope Pinterest is my last job.

When you open up Pinterest, you should feel like you've walked into a building full of stuff that only you are interested in. Everything should feel handpicked for you.

Today we're focused on small acquisitions to add technology where necessary. I think it's fair to say we're not out looking for a large one, but I think it's also very fair to say that as a public company you can never say never.

Hackerspaces are the digital-age equivalent of English Enlightenment coffee houses. They are places open to all, indifferent to social status, and where ideas and knowledge hold primary value.

The problem of forgetting might not torment us so much if we could only convince ourselves that remembering isn't important. Perhaps the things we learn - words, dates, formulas, historical and biographical details - don't really matter. Facts can be looked up. That's what the Internet is for.

It is a fiction to imagine that the haphazard paper chits of old are more private than the modern digital alternative. Paper records have always presented a security risk.