U - Search Engine Optimization Glossary...

U - Search Engine Optimization Glossary for SEO terms that begin with the letter ' I ' including definitions.

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U

USPTO: United States Patent & Trademark Office. See also Trademarks.

Unique Visitor: Identification of an actual individual who is surfing the web (as opposed to an engine’s crawler) tracked by a unique identifiable quality (typically IP address). If a visitor comes to a web site and clicks on 100 links, it is still only counted as one unique visit.

Usability: The "user friendly" quality of web sites and their functions. Sites with good usability are sites that make it easy for their visitors to find the information seek or perform the actions they desire. Anything causing a problem or creating confusion for users is regarded as bad usability, some large Flash animations that are served to visitors with dial up connections cause poor usability. Usability is enhanced through simple, intuitive navigation and clear, informative text.

User Agentz: The identity of a visitor to a web site, whether spider, browser, etc. Internet Explorer and Mozilla are the most common user agents.

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