Algorithm

Algorithm is set of rules which a search engine uses to rank listings in its index in response to a specific query. Search engines do not reveal their algorithms to protect themselves from competitors and people who wish to spam and want to gain an unfair advantage in ranking.

 A/B Testing

In A/B testing, you unleash two different versions of a keyword, advertisement, website, web/landing page, banner design or variable and see which performs the best. You test version A vs. version B to see how different versions perform.

 About.com

Formerly known as The Mining Company About is a guide based information portal.
Online: About.com

 Above the fold

With reference to the top part of a newspaper, the term is used in Internet marketing to describe the top part of the page that the user can see without scrolling down.

 Account

With reference to the top part of a newspaper, the term is used in Internet marketing to describe the top part of the page that the user can see without scrolling down.

 Account Daily Spending Limit

Maximum amount you want to spend each day. You may be charged up to 10% above your Account Daily Spending Limit.

 Ad Clicks

Number of times users click on an ad banner.

 Ad Groups

A group of ads within a Campaign. A set of ads and related keywords within a campaign. The ads can be displayed to prospective customers searching for or viewing content related to your keywords and/or ads. You can apply a default ad group bid to all keywords in an ad group or set custom bids for individual keywords.

 Ad Group Bid

The default bid you set to apply to keywords in an ad group. You can override the ad group bid for a keyword by setting a custom keyword bid.

 Address

A rare identifier for a computer or site online, generally a URL for a web site or marked with an @ for an email address. Literally, it is how your computer finds a location on the information highway.

 Ad Scheduling

In internet marketing, Ad Scheduling is the practice of scheduling the day into several parts, during each of which a different t advertising rule is applied based on advertising objective, budget, and competitors.

 Advanced Match Type

An option within Yahoo Sponsored Search that specifies how search terms are matched to ads. Ads that use the advanced match type are displayed for a broader range of searches relevant to your keywords, titles, descriptions and/or web content. By default, all ads are set to the advanced match type.

 Ad Views (Impressions)

Number of times an ad banner is downloaded and most probably seen by visitors. If the same ad appears on multiple pages concurrently, this statistic may understate the number of ad impressions, due to browser caching. Corresponds to net impressions in traditional media. There is currently no way of knowing if an ad was actually loaded. Most servers record an ad as served even if it was not.

 Advertising Network

an aggregator or broker of advertising inventory for many websites. Advertising networks are the sales representatives for the Web sites within the inventory.

 Affiliate

A marketing partner that promotes your product or services under a pay-for-results agreement.

 Alta Vista

A popular search engine. One of the first search engines originally owned by Digital now owned by Yahoo.

Online: http://www.altavista.com, http://www.av.com

 Anchor

A word, phrase or graphic image, in hypertext, it is the object that is highlighted, underlined or 'clickable' which links to another site.

 Anchor Text

Anchor text refers to the visible clickable text for a hyperlink. For example: < a href='http://www.lazworld.com/' >this is the anchor text< /a >the text usually gives visitors or search engines significant information on what the page being linked to is about.

 Analytics

A feature that permits you to understand a wide variety of activity related to your website and your online marketing activities. Using analytics gives you with information to help optimize your campaigns, ad groups, and keywords, as well as your other online marketing activities, to best meet your business goals.

 Alexa

Founded in April 1996, Alexa Internet grew out of a vision of Web navigation that is intelligent and constantly improving with the participation of its users. Along the way Alexa has developed an installed based of millions of toolbars, one of the largest Web crawls and an infrastructure to process and serve massive amounts of data.
Online: Alexa.com

 Alexa Rank

A web toolbar service that provides webmasters with real-time Alexa site traffic data.
Online: Alexa Toolbar

 AOL

American Online. Stands for 'A (Mercia) O(n)L(ine)' America Online, Inc., based in Virginia, originally began as a closed network content provider; meaning only AOL subscribers had contact to AOL content. Today, this popular service provider continues to offer their own content (available only to AOL subscribers) as well as e-mail and Internet access that can be parentally controlled.

 Apache

Apache is a free, open-source web server software system that is invasive on UNIX, Linux, and similar operating system types. It is also available for Windows and other operating systems. Google Analytics' admin system is powered by a variant of Apache.

 API

Application Programming Interface.

 ASCII

American Standard Code for Information Interchange

 Applet

An application program written in Java which allows viewing of simple animation on web pages.

 ARPA (Advanced Research Project Agency)

The U.S. Department of Defense agency that, in conjunction with leading universities, created Arpanet, the precursor of the Internet.

 Ask Jeeves

A Meta search engine that allows natural English quires. You can ask a question as your search.

Online: Ask.com

 ASP

Microsoft Active Server Pages. Also know as Application Service Provider.

 ASPX

Microsoft Active Server Page Framework

 Auditor

Third-party company that tracks, counts and verifies ad-banner requests or verifies a Web site's ad reporting system.

 Avatar

A digital representation of a user in a virtual realism site.

 Average Page Depth

The average number of pages on a site that visitors view during a single session.

 Average Response Value

The average income value of each click, calculated as total revenue divided by total clicks.

  Mindshare