I always look toward teens on Instagram to really understand what's going on. For some reason, when you're a teen, you just understand the world better than anyone else.

In my fourth grade classroom, I even instituted a government structure, because I was really interested in people having positions and there being law.

You can be a couple in London who happen to take pictures of their breakfasts every day - it's called @symmetrybreakfast - and you can gain hundreds of thousands of followers overnight because people are genuinely interested in your unique angle on the world.

People have presences, both online and in real life. You can choose to show everything, meaning all sides of you, or you can choose to be selective.

Every startup should address a real and demonstrated need in the world. If you build a solution to a problem lots of people have, it's so easy to sell your product to the world.

Every photo you take communicates something about a moment in time - a brief slice of time of where you were, who you were with, and what you were doing.

I think Instagram at its best is where you feel like you're getting the most authentic version of the person on the other side of the camera.