The document discusses multiple ways that businesses can leverage their customers. It explains that customers can now co-create value for businesses and are more informed with more choices due to the internet. Businesses must become more customer-centric. Customers can act as promoters who recommend the business to others. They can also act as consultants, lead users, guides, contributors, and idea generators by providing feedback, solving problems, sharing knowledge and participating in co-creation. Businesses can leverage customers by connecting them through online communities and crowdsourcing.