Companies get customers by offering a great product or service. However, companies keep customers by offering something that other businesses in their category don't. LL Bean was one of the first companies to get a shopping website right. They offered easy ways to sort on their products by size, by style, by color, price or review rating. And they offer a service that all customers can appreciate, free shipping all the time. As their tag line states, no minimum order, no end date, just free.