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Value chain: According to John Del Vecchio writing for Fool.com, a value chain is "a string of companies working together to satisfy market demands." The value chain typically consists of one or a few primary value (product or service) suppliers and many other suppliers that add on to the value that is ultimately presented to the buying public.

Value-added network (VAN): VAN is also an acronym for virtual area network. A value-added network (VAN) is a private network provider (sometimes called a turnkey communications line) that is hired by a company to facilitate electronic data interchange (EDI) or provide other network services. Before the arrival of the World Wide Web, some companies hired value-added networks to move data from their company to other companies. With the arrival of the World Wide Web, many companies found it more cost-efficient to move their data over the Internet instead of paying the minimum monthly fees and per-character charges found in typical VAN contracts. In response, contemporary value-added network providers now focus on offering EDI translation, encryption, secure e-mail, management reporting, and other extra services for their customers.

Venture capitalist: Individuals or groups that generate the financial support of a growing enterprise, usually claiming a certain degree of ownership in the company.

Vertical portal: A specialized Web site offering a great deal of information, links, and new about a specific subject.

View: A view is, depending on what's meant, either an ad view or a page view. Usually an ad view is what's meant. There can be multiple ad views per page views. View counting should consider that a small percentage of users choose to turn the graphics off (not display the images) in their browser.

Viral marketing: Using members of a target audience to distribute a marketing message to other potential customers, e.g., forwarding an e-mail newsletter

Virtual reality: Computer-mediated method for interacting with a three-dimensional environment.

Visitor: A person who goes to a specific Web site. Sites often define their traffic levels in terms of the number of visitors they've had in a given time period.

Visit: A visit is a Web user with a unique address entering a Web site at some page for the first time that day (or for the first time in a lesser time period). The number of visits is roughly equivalent to the number of different people that visit a site. This term is ambiguous unless the user defines it, since it could mean a user session or it could mean a unique visitor that day.

VRML: Virtual Reality Modeling Language. Programming language for displaying three-dimensional space as if the viewer were moving through it in any direction.