Having a company that's successful is a wonderful platform to do new things. You don't have to raise money for it; you can take profits from the company and pump them into new business.

Instagram was created because there was no single place dedicated to giving your mobile photos a place to live and to be seen.

The best products in the world have a point of view. The worst products have none.

What's awesome about social media is you curate your own experience. That leads to the rise of niche celebrities, who are actually just as popular as mass celebrities, but because there's no incentive for traditional media to invest in them as celebrities, they find a home where people can follow them on Instagram.

Focusing on one thing and doing it really, really well can get you very far.

In the past, people have looked at photos as a record of memory. The focus has been on the past tense. With Instagram, the focus is on the present tense.

Obviously, being the CEO, there are a lot of eyes on what you do and what you post and how you post, and I think one of the challenges of Instagram in general is that, as we get bigger, there are just more voices in the room, more eyes on everyone's accounts.