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Crawler
Also known as a
spider, the part of a search engine that locates and indexes every page on the Web that is a possible answer to a searcher's query.
Directory
Web site that focuses on listing web pages or sites by specific categories, using human editors to manually place web sites or web pages into the categories.
FFA
Abbreviation for free-for-all links. FFA web pages contain a collection of indiscriminate, often unrelated, links to other web pages. FFA links are commonly used to artificially boost link popularity and are considered spam by the major search engines.
Index
The list used by the search engine of each word on the Web, along with which pages each word is on. When a searcher enters a query, the search engine looks for the words in that query in the search index and locates the pages that contain those words. The search index is the primary database of a search engine, and no search engine can work without a very well-designed index.
KEI
Abbreviation for Keyword Effectiveness Index, a mathematical representation of the popularity of a keyword (the number of searches containing it) compared to its popularity in usage (the number of Web pages it is found on).
Keyword
A single word typed into a search engine query. Also a single word that accurately describes the contents of a single web page or web site.
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Also known as link analysis, refers to the number and quality of inbound links to a web site from other web sites. Search engines use link analysis when ranking search results by relevancepages that have many inbound links from high authority pages are ranked higher than other pages in the search results.
An HTML
tag, placed between the <head>
and </head> tags, that
gives information about the content
of a web page, such as what HTML
specifications a web page follows or
description of a web page's content.
Metatags are especially important to search engines because they contain key clues about a page's overall relevance to a search query.
The process of designing, writing, coding (in HTML), and submitting web pages to the search engines to increase the probability that your web pages will appear at the top of search engine queries for selected keywords and key phrases. The process of making a web page as perfect or effective as possible for end users and the search engines.
PageRankA numeric value that represents how popular a web page is based on Google's link analysis calculations. Part of this numeric value is the quality and quantity of links pointing to a web page.
Robot
A software program that search engines use that visits every URL on the web, follows all the links, and catalogs all the text of every web page that (a) contains text, and (b) that can be visited or crawled. Also known as a spider or crawler, but the term "robot" is more and more commonly associated with automated agents.
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A method of telling a search engine about the existence of a URL that you would like crawled. Search engines vastly prefer to find new sites by following links, but do offer ways to manually submit your home page's URL if your site is somehow not discovered.
RankingThe technique by which a search engine sorts the matches to produce a set of search results. Although some search engines can sort by the date of the Web page, the most common ranking method is by relevance. The software code that decides exactly how the ranking is performed is called the ranking algorithm, and is a trade secret for each search engine.
Uniform Resource Locator (URL)The address of a Web page that a visitor can enter into a browser to display that page. For example,
http://www.toptrafficwholesaler.com/default.asp is the URL of the Top Traffic Wholesaler home page.
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