Kevin Systrom

The Gmail app is definitely the app I use the most. I am always running from meeting to meeting, so it keeps me up-to-date with everything going on. I actually e-mail more often from my iPhone than my laptop, so having a nicely designed e-mail app is really important.

Though builders may build, in the main they follow the plans of architects. Teachers teach, but they must have a text. Politicians govern, but only upon the flow of commentary that raises them up or casts them down.

Chobani did a really wonderful yogurt campaign on 'Instagram' to shift perceptions away from the fact that they were just yogurt. And they had a 7-point incremental lift on shifting that perception through a brand advertisement on Instagram.