The title of this post is a quote from the French philosopher, Voltaire. It expresses the notion that we must not accept that “good” performance is equivalent to “the best” performance—in fact, they’re enemies.

I’m convinced that most service providers are content to deliver “good” customer service. Their rationale may be based on the assumption that by meeting customers’ expectations, they will create satisfied customers.

Bain and Company, a consumer research firm, has a name for satisfied customers: passives. Passives, as the name implies, are satisfied but unenthusiastic customers who are easily wooed by the competition. These customers are disloyal, tending to make buying decisions based on convenience and price considerations—as opposed to brand loyalty.

Customers who are merely satisfied are generally the product of company cultures that reward efficiency, such as many fast food restaurant chains and big box retailers. These operations are process-focused, transactional, and pride themselves on product and service consistency from location to location.

Contrast the majority of service providers content to deliver “good” customer service with the rare exceptions that aspire to deliver “the best” customer service. Companies such as Disney, Zappos, Nordstrom, and Lexus come to mind.

Instead of attempting to meet customers’ expectations, these companies aspire to exceed expectations. Instead of producing merely satisfied customers, these companies create delighted customers!

Bain and Company has a name for delighted customers as well: promoters. Promoters are the least price-sensitive, have the highest repurchase rates, and are responsible for between 80 and 90 percent of positive referrals to a company or brand.

Promoters are the product of company cultures that reward excellence. These companies are customer-focused, experiential, and pride themselves in delivering product and service excellence from location to location.

Too many businesses accept that “good” (or, more realistically, adequate) customer service is good enough.

Is your business always the most convenient and least expensive option for the customers you serve? Is it ever? Is your company content to produce passive customers or would you prefer a legion of promoters? Is your company’s goal to be good or to be the best?

There is a clear difference between the two that yields predictable results. Voltaire observed this difference 200 years ago and your customers can see it today.

Our clothes dryer stopped working late last week and the part I ordered from GE was not scheduled to arrive until Monday. Having four kids, a functional dryer over the weekend is a must!

So we washed our clothes and, afterward, brought them to a neighbor’s house to dry in her dryer. As my wife was leaving our neighbor’s house she said, “Just give me a call when the dryer stops and I’ll come back and pick them up.”

About an hour later my wife received a call from our neighbor and went over to retrieve the clothes. When she arrived, she found the clothes neatly folded and stacked inside the laundry basket. Wow!

We were delighted by the generosity and thoughtfulness of our neighbor. Our expectation had simply been to borrow her dryer and retrieve a basketful of clothes and yet we were pleasantly surprised as our expectations were exceeded. Our relationship grew stronger and a lasting memory was made.

Now, consider the implications of treating customers in this way. Most companies are in the business of creating promoters—those customers who are the least price-sensitive, have the highest repurchase rates, and are responsible for between 80 and 90 percent of positive referrals to a company or brand. Simply meeting expectations does not produce promoters. Promoters result from consistently exceeding expectations and, when possible, delighting customers!

A great example of a company that consistently exceeds customer expectations is Zappos.com. At Zappos, exceedind customer expectations is the cornerstone of its marketing, preferring to rely on positive referrals and repeat purchases from its legion of promoters rather than expensive ad campaigns. In fact, 75% of Zappos’ sales come from repeat customers. In an October 17, 2008 interview in Advertising Age, Zappos CEO, Tony Hsieh said, “We actually take a lot of the money that we would have normally spent on paid advertising and put it back into customer experience. We’ve always stuck with customer service, even when it was not a sexy thing to do.”

Each Zappos new hire—everyone from the chief financial officer to the children’s footwear buyer—is required to go through four weeks of customer-loyalty training. In addition, Zappos offers free delivery, free returns, and a 365-day return policy to demonstrate its commitment to exceptional customer service. It even quietly upgrades the experience by accelerating shipping from four-to-five-day to second-day or next-day, in order to pleasantly surprise customers.

Meeting expectations is predictable, process-focused, and transactional. Exceeding expectations is unexpected, people-focused, and experiential. My wife and I were delighted when our neighbor pleasantly surprised us by exceeding our expectations. Acts of service like this strengthen relationships and create lasting memories. They are what turn neighbors into friends.

By looking for opportunities to take an extra step and pleasantly surprise your customers, you can have a similar effect—turning customers into promoters.