E-commerce is defined as the buying and selling of products or services over electronic systems such as the Internet and to a lesser extent, other computer networks. It is generally regarded as the sales and commercial function of eBusiness. There has been a massive increase in the level of trade conducted electronically since the widespread penetration of the Internet. A wide variety of commerce is conducted via eCommerce, including electronic funds transfer, supply chain management, Internet marketing, online transaction processing, electronic data interchange (EDI), inventory management systems, and automated data collection systems. US online retail sales reached $175 billion in 2007 and are projected to grow to $335 billion by 2012 (Mulpuru, 2008).