Consumer to Consumer (C2C) : The transactions under Consumer to Consumer are between two people. Using e-business facility on internet, the consumers can buy and sell goods and services to other consumers, through some third party. A common consumer posts the product or services for sale with the price and other details online and other consumers tries to buy them. The sites are performing the role of intermediaries, just to match the consumers. For buying and selling, internet allows a lot of space for consumers group to be formed. The consumer forums interact with each other for best variety of goods and services. Through such groups redressal of complaints is also possible. One may sell his products through an online retail space operated by eBay or Yahoo! shopping, etc.