Barrels are very difficult to find. But when you have them, give them lots of equity. Promote them, take them to dinner every week, because they are virtually irreplaceable because they are also very culturally specific. So a barrel at one company may not be a barrel at another company. One of the ways, the definition of a barrel is, they can take an idea from conception and take it all the way to shipping and bring people with them.

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 companies I have traditionally seen do best over the long term had lead investors for their seed rounds

Delegate completely. Let people make mistakes and learn.

Every good startup is a cult. And it's really hard to create a cult if you are sharing space with people. Because a cult means you think you are better than every other startup, you have a special way of doing things that's better than anyone else in the world.

It's never a metric, it's where the person is going or not. Metrics are used to make things work better, but don't necessarily make a business better.

The more you simplify, the better people will perform. People can not understand and keep track of a long complicated set of initiatives. So you have to distill it down to one, two, or three things and use a framework they can repeat, they can repeat without thinking about, they can repeat to their friends, they can repeat at night.