Customer to customer (C2C or consumer to consumer) markets provide a way to allow customers to interact with each other. Traditional markets require business to customer relationships, in which a customer goes to the business in order to purchase a product or service.

Consumer organizations are advocacy groups that seek to protect people from corporate abuse like unsafe products, predatory lending, false advertising, astroturfing and pollution.

n. almost all states and the federal government have enacted laws and set up agencies to protect the consumer (the retail purchasers of goods and services) from inferior, adulterated, hazardous or deceptively advertised products, and deceptive or fraudulent sales practices. Federal statutes and regulations govern mail fraud, wholesome poultry and meat, misbranding and adulteration of food and cosmetics, truth in lending, false advertising, the soundness of banks, securities sales, standards of housing materials, flammable fabrics, and various business practices. The Magnuson-Moss Act (1973) sets minimum standards for product warranties, makes a company that financed the sale responsible for product defects, and creates liability (financial responsibility) for "implied" warranties (when the circumstances show that a warranty of lack of defects was intended) as well as express (specific) warranties. Mail fraud may include fake contests, "low-ball" price traps (bait and switch), supposed credit for referrals of your friends, phoney home improvement loans with huge final payments, and swamp land sales. Some states' laws regulate and give some protection against high-pressure door-to-door sales, false labeling, unsolicited merchandise, abusive collection practices, misleading advertising and referral and promotional sales. Almost all states have agencies set up to actively protect the consumer. See also: bait and switch fraud implied warranty product liability securities