Where I feel the most productive and engaged is when I'm buried in code, buried in some project, tweaking some designs. I'm certainly introverted.

I'm always so surprised when people fill their homes up with stuff.

The biggest lesson has been the importance of constantly repeating the mission. It means bringing the team together every week to talk about all of our projects, progress, and vision.

You guys are more talented than anyone in the Tumblr office or in Palo Alto or Sunnyvale. We're constantly in awe, constantly in service.

Tumblr gets better faster with more resources to draw from.

For every new feature we add, we take an old one out. A lot of big sites don't do that, and it's a problem.

I think appointments are caustic to creativity.