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SEO Glossary: I-K

Impression: An impression is a page or ad viewed by an Internet user. It is also referred to as 'pageview'.

Inbound Links: Links from sites other than your own that point towards your website are called inbound links. They help in improving PageRank.

Index: is the textual content database of a search engine, where text from each page that the spider has crawled is stored.

Invisible Web: Refers to the huge amount of information on the internet that is not stored -INDEXED-by search engines.

Java Applets: Java applets are basically small programs written in Java that can be embedded in the web pages. These run on the internet user's computer and not on the web server's. So since these Java applets are invisible to the search engine and if content or navigation is embedded in it, it will not be indexed.

Java source code combined into executable code is called 'bytecode'.

Java Scripts: Programs written in the programming language Java are called JavaScripts. They don't run on the web server's computer and only run on the Internet user's computer. JavaScripts cannot be run on search engines and if navigation or content is embedded in a JavaScript, it will be invisible to the search engines and will not get indexed.

JavaScripts are not compiled, i.e. the source code and the executable code are the same. By selecting the 'View Source' option an Internet user can view the website's JavaScript source code. They are used to design interactive sites.

Key Phrase: Key phrase is a phrase that contains key words.

Keyword: A keyword is a word that the internet user may use to find relevant web pages. If the keyword doesn't appear in the page it is unlikely to find a place in the search result, unless the website has bid for the keyword in a pay-per-click search engine.

Keyword Density: is the number of times the keyword occurs in a page. It is calculated as: number of keywords of the page/ number of words on the page. It is expert opinion that maximum density should be 4-8%.

Keyword Popularity: is calculated from the number of times a keyword has been used in searches done by internet users. WordTracker.com and Overture's Search Term Popularity Tool (http://inventory.overture.com) provide keyword popularity numbers.

Keyword Prominence: Keyword prominence is the placement of the keyword in the HTML source code of the web page. The higher up in the page that the keyword is the more the keyword prominence and more weight provided by search engine. Thus it is ideal to make the first paragraph keyword rich.

Keyword-rich: is a description of a web page or text that is full of keywords and not meaningless words.

Keyword stuffing: is the excessive use of keywords that renders the page unreadable and reduces its usability. Keyword stuffing may be in the form of making the text and background on the same color or over-filling alt tags with long strings of keywords.

Keyword Research: is the process of deciding the keywords and phrases used by internet users for searches. Keyword research may be provided on web pages, etc.