Unethical SEOUnethical search engine optimization techniques that are considered unscrupulous and can result in getting sites banned from the search engines.
Unique VisitorA real visitor to a web site. Web servers record the IP addresses of each visitor, and this is used to determine the number of real people who have…
Unique visitorsUnique visitors are a count of individual users who have accessed your web site.
UniverseIn the world of investments, the word universe refers to a specific group or category of investments that share certain characteristics.
updateThe process through which search crawls content and compiles an index of the content.
Usabilityqualities of a record that allow it to be accessed, processed, and understood over time
Usage DataThings like a large stream of traffic, repeat visitors, multiple page views per visitor, a high clickthrough rate, or a high level of brand related search…
UsenetThe collection of host computers and networks that exchange news articles organized by subject. [Exchange 5.5]
User agentAn application that browses the Web and leaves information about itself at the sites that it visits. In enterprise search, the Web crawler is a user agent.
User Generated ContentUser-generated-content (USG) is content created and published by the end-users online.
User sessionan instance of an Internet user accessing your web site for a length of time, then leaving. During a user session any number of pages may be accessed.