My mom cares that I tweeted a picture of my breakfast. She's knows I'm eating and I'm safe.

Twitter has been my life's work in many senses. It started with a fascination with cities and how they work, and what's going on in them right now.

There's an entire universe in every single tweet, and it all really depends on the content as far as how it's going to spread.

I loved couriers. You had this transfer of physical information happening throughout the city and the world. Someone picking up the package, putting it in a bag, going somewhere, taking it out of the bag, giving it to someone else. I thought that was so cool. I wanted to map it, to see that flow on a big screen.

Short term satisfaction will never lead to something timeless.

TweetDeck is a very interesting client, because it presents a view that no other client in the world presents, which is this multicolumn, massive amounts of information in one pane. And people really, really enjoy that.

Making something simple is very difficult.