Zappos (Bill Taylor Harvard Business Publishing) is one of the most interesting companies around that is transforming retailing.

First, some background. As most of you know, Zappos sells shoes—lots of them—over the Internet. The company expects to generate sales of more than $1 billion this year, up from just $70 million five years ago. Part of the reason for Zappos’s meteoric success is that it got the economics and operations right. It offers customers a huge selection—four million pairs of shoes (and other items, such as handbags and apparel) in a warehouse in Kentucky next to a UPS hub. (If Imelda Marcos visited that warehouse she’d likely have a coronary on the spot.) It also offers free delivery and free returns—if you don’t like the shoes, you box them up and send them back to Zappos for no charge.

So the value proposition is a winner. But it’s the emotional connection that seals the deal. This company is fanatical about great service—not just satisfying customers, but amazing them. The company promises free, four-day delivery. That’s pretty good. But most of the time it delivers next-day service, a surprise that leaves a lasting impression on customers: “You said four days, but I got them the next morning.”

Zappos has also mastered the art of telephone service—a black hole for most Internet retailers. Zappos publishes its 1-800 number on every single page of the site—and its smart and entertaining call-center employees are free to do whatever it takes to make you happy. There are no scripts, no time limits on calls, no robotic behavior, and plenty of legendary stories about Zappos and its customers.

This is a company that’s bursting with personality, to the point where a huge number of its 1,600 employees are power users of Twitter so that their friends, colleagues, and customers know what they’re up to at any moment in time.

The picture at the top of the post is the company Twitter Directory. Yes the Company Twitter Directory. Note who the power user is?

I can only imagine how this immediate and informal conversation helps the company culture

Here is the NPR Bryant Park Radio Show interviewing Bill about Zappos about how Zappos keep their culture in spite of a massive increase in staff – they pay the people who may not fit to leave! $1,000 to quit. They fear “blanding themselves out is worth it!