What B2C (Business-to-Consumer) is

An acronym that describes the thousands of e-commerce Web sites which sell products directly to the public (the consumer market). B2C is different from the B2B sector, and this distinction is important when comparing Web sites. Each approach has its own business model, strategy, execution, and fulfillment. NetLingo.com has a B2C component that includes selling books (including NetLingo: The Internet Dictionary) and smiley merchandise.

The meaning of M-commerce

(mobile commerce) A form of e-commerce that deals in the fees a company collects for licensing, advertising, or selling subscriptions to the content or services offered on mobile devices. With the popularity of cell phones and PDAs, portable devices such as these are becoming Web-enabled through wireless networks and WAP. M-commerce is considered a form of e-commerce (just as d-commerce is) because it has to do with monies generated for a product or service that exists electronically on the Internet. In other words, even though the content appears on mobile phones and other wireless communications devices, as opposed to computer screens, m-commerce is still considered e-commerce.