Traditional sales and marketing involves increasing market shares, which means selling as much of your product as you can to as many customers as possible. One-to-one marketing involves driving for a share of customer, which means ensuring that each individual customer who buys your product buys more product, buys only your brand, and is happy using your product instead of another to solve his problem. The true, current value of any one customer is a function of the customer's future purchases, across all the product lines, brands, and services offered by you.
Seth GodinEveryone has failed, everyone has misspoken, everyone has meant well but done the wrong thing. Your favorite restaurants, cafes and books have all gotten a one-star review along the way. No brand is perfect, no individual can pretend to be either. Perfect can't possibly be the goal, we're left with generous, important and human instead.
Seth Godin