'Luck' is recognizing when the situation encourages build out and execution.

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.

Great companies don't just have one founding moment. They have many founding moments.

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.

Twitter is the world.

From a product standpoint, we want every touch point to feel magical. It inspires trust.