At Zappos, one of our core values is to Pursue Growth and Learning. In the lobby of our headquarters, we have a giving library where we give away books to employees and visitors that we think will help with their growth, both personally and professionally. I can't wait to add The Compound Effect to our library.

Rather than focus on trying to get a lot of customers to market yourself, really focus more on the actual product or service itself and existing users to, like, what would make them happier, what would make them come back more and more times or in our case buy more often.

Twitter is like hugging. Just because it's hard to measure the return on investment doesn't mean there isn't value there.

For individuals, character is destiny. For organizations, culture is destiny.

Service Over the years, the number one driver of our growth at Zappos has been repeat customers and word of mouth. Our philosophy has been to take most of the money we would have spent on paid advertising and invest it into customer service and the customer experience instead, letting our customers do the marketing for us through word of mouth.

Instead of getting an iPad, I now use my iPhone with a giant magnifying glass attached to my face.

Customer service shouldn't just be A department, it should be the entire company.