Most adults I know start their Internet session at Google, and most kids I know start their Internet session at either Facebook or MySpace.

Customers are a great way to finance a business for many reasons. First, customer financing is typically non dilutive. They want something from you other than equity in your business. Customers also help you fit your product to the market. And customers will help debug and improve the quality of the product.

Games are the most social of all things on the web.

Foursquare's adoption of a game dynamic when it launched is a particularly clever implementation of a social hook.

I get everything that satisfies my soul from bringing together objects that are in the world, manipulating them, working with spatial arrangements, and having things presented in the way I want to see them.

It's upsetting to me that you have to be a millionaire to invest in your friend's start-up.

Building product is not about having a large team to manage. It is about having a small team with the right people on it.