Kevin Systrom

The best companies in the world have all had predecessors. 'YouTube' was a dating site. You always have to evolve into something else.

People interact with their phones very differently than they do with their PCs, and I think that when you design from the ground up with mobile in mind, you create a very different product than going the other way.

I actually think some of my best moments in life have been while I was with people from Instagram - whether it's super late nights getting a release out or being able to travel to places I'd never visited and meeting some of the most interesting people I've ever met.

Back in the day, I actually studied photography in Florence for a few months, and my photography teacher took away my digital camera and said, 'No, use this - it's analog and it's square.' It was a Holga camera, a very cheap $3 or $4 plastic camera. And that's what inspired 'Instagram'.

I grew up as a photo nut. Every Christmas I would get a new camera. It's a huge part of my life.

Just so everyone knows, we're not a photo-sharing company. I don't see photos on 'Instagram' as art. They're much more about communication.

'Instagram' is a media company. I think we're about visual media. I explain ourselves as a disruptive entertainment platform that enables communication through visual media. I don't think it's just photos.