E-commerce refers to the buying and selling of goods and services over the internet. Currently 66% of the total population uses e-commerce, and this is projected to rise to 85% over the next 5 years. Some key events in the history of e-commerce include the creation of the World Wide Web in 1991, the founding of eBay and Amazon's first sale in 1995, and e-commerce sales in the U.S. surpassing $1 billion annually in 1996. Major types of e-commerce include business-to-business, business-to-consumer, consumer-to-consumer, and consumer-to-business. Advantages include faster buying/selling, 24/7 access, lower costs, and