Zappos is an online retailer founded in 1999 that specializes in shoes, clothing and accessories. It grew rapidly due to its superior customer service culture and emphasis on fast shipping, free returns and friendly customer support. In 2009, Amazon acquired Zappos for $1.2 billion but allows it to operate independently. Zappos continues to focus on customer satisfaction through its unique company culture and wide product selection. It remains a leader in online shoe and apparel sales.