You really need to spend a lot of your time focussing people.

There are three things you need to do as a CEO-founder. Think strategically, drive design, and drive technology. Some people who are really good at one can build a pretty foundational company. Most people who are very successful are good at two. But Jack is the only person in the Valley I've met who's all three. He's a first-rate strategist, a first-rate designer, and a first-rate technologist.

If people start going to a desk, some one individual employees desk and they don't report to them... it's a sign that they believe that person can help them. So if you see that consistently, those are your barrels. Just promote them, give them more opportunity as fast as you can.

The job of an editor is to ensure a consistent voice.

Don't accept the excuse of complexity. A lot of people will tell you, this is too challenging, this is too complicated, yeah well I know other people simplify but that's not for me, this is a complicated business. They're wrong. You can change the world in 140 characters.

The agenda should be crafted by the employee who reports to the manager not the manager.

So that's your job too, to clarify and simplify for everybody on your team. The more you simplify the better people will perform.