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Glossary of SEO Terms

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A formula or a set of steps for solving a particular problem. To be an algorithm, a set of rules must be unambiguous and have a clear stopping point. Algorithms can be expressed in any language, from languages like English or French to programming languages like FORTRAN. We use algorithms every day. For example, a recipe for baking a cake is an algorithm. Most programs, with the exception of some artificial intelligence applications, consist of algorithms. Inventing elegant algorithms- algorithms that are simple and require the fewest steps possible-is one of the principal challenges in programming

Abbr Tag

Abbr text is used for abbreviations which are shortened forms of words like HTML, FBI or WWW.
Example: <ABBR>abbr text goes here</ABBR>

Acronym Tag

Acronym text is used for pronounceable abbreviations like NATO. It is also used for shortened forms of word like Inc. for Incorporated or Lab. for laboratory.
Example: <ACRONYM>acronym text goes here</ACRONYM>


Google provides website owners with a fast and effective way to display related advertising on their web pages and site search pages and earn money through profit sharing with Google. The Google's Adsense system is based on topical relevancy of the ads shown on the publishers' web pages while maximizing earning from each page Google Adsense ads are shown on. Some webmasters can earn six figure monthly income with Adsense published on their forum, or blogs.


Google earns the majority of their revenue from placing advertisements next to natural search results. This type of advertising is called Pay-Per-Click advertising or PPC. Advertisers bid on keywords and create small text or image based ads in using Google Adwords. When a search query is typed into the Google search box, AdWords finds ads that match the target keywords and based on the bid amounts and ad relevance it shows a sorted list of paid ads on the top and right hand side of the screen. You can sign up for Google Adwords.


API is the short form for Application Programming Interface and it's a set of predefined methods and protocols to build remotely hosted client applications that interact with the main host application server. Google, Yahoo and MSN have developed their own propriatery search APIs and made them available to webmasters with basic programming skills. The query results returned by the search APIs are further parsed and processed by the client application to enhance the API results.

BODY Text Tag

Body text is the text visible in the browser. Does not include links and tool tips.
Example: <BODY>Body text goes here</BODY>

Bold Tag

Bold text is used as a font styling element to signify important words or sections in the web page.
Example: <B>bold text goes here</B>

Cite Tag

Cite text is used for citations or reference to other sources.
Example: <CITE>cite text goes here</CITE>


A name that identifies one or more IP addresses. For example, the domain name microsoft.com represents about a dozen IP addresses. Domain names are used in URLs to identify particular Web pages. For example, in the URL http://www.pcwebopedia.com/index.html, the domain name is pcwebopedia.com. Every domain name has a suffix that indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains. For example:

gov - Government agencies

edu - Educational institutions

org - Organizations (nonprofit)

mil - Military

com - commercial business

net - Network organizations

ca - Canada

th - Thailand

Because the Internet is based on IP addresses, not domain names, every Web server requires a Domain Name System (DNS) server to translate domain names into IP addresses.

Doorway page

A page made specifically to rank well in Search Engines for particular Keywords, serving as an entry point through which visitors pass to the main content.

EM Tag

Em text is used for emphasis and is usually displayed in italic font.
Example: <EM>em text goes here</EM>

Google API

You can use your Google API license key to perform automated queries on Google that complies with Google's term of service agreement. To access the Google Web APIs service, you must have a Google API license key. Your Google Account and license key entitle you to 1,000 automated queries per day.

Google's Page Rank

PageRank relies on the uniquely democratic nature of the web by using its vast link structure as an indicator of an individual page's value. In essence, Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Votes cast by pages that are themselves "important" weigh more heavily and help to make other pages "important."

Heading Tag

Headings (H1,H2,H3) are used as the topics of the website's sections.
Example: <H1>heading 1 goes here</H1>


Short for Hypertext Markup Language, the authoring language used to create documents on the World Wide Web. HTML is similar to SGML, although it is not a strict subset. HTML defines the structure and layout of a Web document by using a variety of tags and attributes. The correct structure for an HTML document starts with (enter here what document is about) and ends with . All the information you'd like to include in your Web page fits in between the and tags.

HTML Comment Tag

Html comments are not visible in the browser and are mainly used for developers to document html code.
Example: <!-- comment goes here -->


HTTP is called a stateless protocol because each command is executed independently, without any knowledge of the commands that came before it. This is the main reason that it is difficult to implement websites that react intelligently to user input. This shortcoming of HTTP is being addressed in a number of new technologies, including ActiveX, Java, JavaScript and cookies. Short for Hypertext Transfer Protocol, the underlying protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted, and what actions Web servers and browsers should take in response to various commands. For example, when you enter a URL in your browser, this actually sends an HTTP command to the Web server directing it to fetch and transmit the requested Web page.


A word used by a Search Engine in its search for relevant Web pages.

Keyword Count, Keyword Occurrence

How often a Keyword or Keyword phrase occurs in a particular HTML page section.

Keyword Density

Most search engines look for keyword density. Some will only look at the first 200-400 characters of your site, and count the number of times the keyword appears. Some index a small amount of text from the top, middle, and bottom parts of your web page, and search them for keywords. Generally keyword density should be in the 6-8% range. Simply repeating the keyword will not work because some search engines consider grammar structure in their calculations. For a very competitive keyword you could aim a little higher perhaps targeting a 10% range, but you have to take into consideration the search engine may consider this spamming.

Keyword Prominence

Prominence is the ratio of the position of one keyword or keyword phrase to the positions of the other keywords in an HTML section of the page. For example in the text enclosed by the BODY tag is one of sections of the page we measure keyword prominence in.

Your most important keywords must appear in the crucial locations on your web pages because search engines like pages where keywords appear closer to the top of the page. They should preferable appear in the first paragraphs of your page. Also keep in mind if you include keywords closer to the bottom of your page it will have a negative effect on the overall keyword prominence calculations.

Italic Tag

Italic text is used as a font styling element to point out new terms, book or article titles etc.
Example: <I>italic text goes here</I>


A global network connecting millions of computers. More than 100 countries are linked into exchanges of data, news and opinions.

Internet Marketing Terms

Ad blocking, banner blindness, buzzword, cookie, email spam, FFA, mouse-trapping, opt-out, page-jacking, spam, Search Engine spam, trick banner.

Image Alt Tag

HTML tag that provides alternative text when non-textual elements, typically images, cannot be displayed. The image tag is a very important tag. It directs the browser to either a gif or jpeg file. The browser then displays that image file where the command is placed.

Image Source Names Tag

Image names are the names of the image files.
Example: <IMG SRC="image-name-goes-here.gif">


In database design, a list of keys (or Keywords), each of which identifies a unique record. Indices make it faster to find specific records and to sort records by the index field -- that is, the field used to identify each record.

Link Href Tag

Link href is the attribute of the link and specifies the address of another page.
Example: <A HREF="link-href-goes-here.html">text</A>

dered as a tool tip in the browser.
Example: <A HREF="page.html" TITLE="link title goes here">text</A>

Link Farms

A link farm consists of sites that link to other sites for the sole purpose of increasing their link popularity score. Unlike perfectly valid links to sites with related information, sites that participate in link farming contain links to totally unrelated sites. This practice is also referred to as link stuffing. Google hates link farms and labels the links they generate as spam. In fact, Google gates them so much that some sites get removed from the index if they're affiliated with link farms. Spooked, some web masters are considering removing all outbound links from their sites.

Link Popularity

A measure of the quantity and quality of sites that link to your site. A growing number of Search Engines use link popularity in their ranking algorithms. Google uses it as it's most important factor in ranking sites. HotBot, AltaVista, MSN, Inktomi, and others also use link popularity in their formulas. Eventually every major engine will use link popularity, so developing and maintaining it are essential to your Search Engine placement.

Link Text

Link text is the clickable text which connects one web page to another. The link text is also referred to as the Anchor text.
Example: <A HREF="page.html">link text goes here</A>

Link Title Tag

Link title is the attribute of the link and adds information about the link, it is rendered as a mouse over text when a visitor hovers over the link.

Manual Submission

Visiting a search engine and adding a URL to the Search Engines individually by hand.

Meta Tags

A special HTML tag that provides information about a Web page. Unlike normal HTML tags, meta tags do not affect how the page is displayed. Instead, they provide information such as who created the page, how often it is updated, what the page is about, and which Keywords represent the page's content. Many Search Engines use this information when building their indices.

Page Name

Most search engines look for the keywords in the domain name, folder name and page name. Keywords should be separated by hyphens.
Example: http://www.keyword1.com/keyword2-keyword3.html.

Search Engine Optimization SEO

Short for Search Engine Optimization, the process of increasing the amount of visitors to a website by ranking high in the search results of a Search Engine. The higher a website ranks in the results of a search, the greater the chance that site will be visited by a user. It is common practice for Internet users to not click through pages and pages of search results, so where a site ranks in a search is essential for directing more traffic toward the site.

Search Engine Positioning

Typically, a Search Engine works by sending out a spider to fetch as many documents as possible. Another program, called an indexer, then reads these documents and creates an index based on the words contained in each document. Each Search Engine uses a proprietary algorithm to create its indices such that, ideally, only meaningful results are returned for each query.


The SERP is otherwise known as the Search Engines Results Page. This is the page that users see after typing their search query into an engine. Since conversion starts at the SERP, it is an important job of the search marketer to obtain strong call-to-action listings that entice the click.

Search Engine Ranking

A program that searches documents for specified Keywords and returns a list of the documents where the Keywords were found. Although Search Engine is really a general class of programs, the term is often used to specifically describe systems like Alta Vista and Excite that enable users to search for documents on the World Wide Web and USENET news groups


Excessive manipulation of on-page and off-page search engine ranking factors to influence search engine rankings. Spam websites are built for the search engines and not for human visitors and they often contain little or no relevant content to search queries.


Words that are common in a full-text file but have little value in searching. Words in a stopword file will be excluded from the indexes, considerably reducing the size of the indexes and improving search performance. For example these are stopwords a about an are as at be by com for from how.

Strong Tag

Strong text is used for stronger emphasis and is usually displayed in bold font.
Example: <STRONG>strong text goes here</STRONG>


The act of supplying a URL to a Search Engine in an attempt to make a Search Engine aware of a site or page.

Table Summary Tag

Table summary is used for describing the table's contents and purpose to non-visual media.
Example: <TABLE SUMMARY="summary goes here">

Table Caption Tag

Table caption is used as a short description of the table's purpose usually displayed below the table.
Example: <TABLE><CAPTION>caption goes here<CAPTION></TABLE>

Title Tag

HTML tag used to define the text in the top line of a Web browser, also used by many Search Engines as the title of search listings.
Example: <TITLE>title goes here</TITLE>


An individual who manages a website. Depending on the size of the site, the Webmaster might be responsible for making sure that the Web server hardware and software is running properly designing the website, creating and updating Web pages, replying to user feedback, creating CGI scripts or monitoring traffic through the site.