You can't be focussed without really great communication

These all sounded really bad, but they turned out to be good. If they had sounded really good, there would have been too many people working on them.

You want an idea that not many other people are working on, and it's okay if it doesn't sound big at first.

The track record for founders that don't already know each other is really bad.

Every thing at a startup gets modeled after the founders. Whatever the founders do becomes the culture.

Here's a good rule of thumb: don't worry about a competitor at all, until they're actually beating you with a real shipped product.

Founders need to figure out what the message of the company is going to be.