Anchor Text

The text that a user would click on to follow a link. In the case the link is an image the image alt attribute may act in the place of anchor text. Search engines assume that your page is authoritative for the words that people include in links pointing at...

AllTheWeb

Search engine which was created by Fast, then bought by Overture, which was bought by Yahoo. Yahoo may use AllTheWeb as a test bed for new search technologies and features.

API (Application Program Interface)

An API is a series of conventions or routines used to access software functions. Most major search products have an API program. An interface that can be used by third-party program developers to add member-specific data to applications. When companies open their platforms to third-party developers, they can host APIs in...

Alt Attribute

Blind people and most major search engines are not able to easily distinguish what is in an image. Using an image alt attribute allows you to help screen readers and search engines understand the function of an image by providing a text equivalent for the object. Example usage <img src="http://www.seobook.com/images/whammy.gif" height="140"...

ASP

Active Server Pages - a dynamic Microsoft programming language.  

Authority

The ability of a page or domain to rank well in search engines. Five large factors associated with site and page authority are link equity, site age, traffic trends, site history, and publishing unique original quality content. Search engines constantly tweak their algorithms to try to balance relevancy algorithms based...

Arbitrage

Exploiting market inefficiencies by buying and reselling a commodity for a profit. As it relates to the search market, many thin content sites laced with an Overture feed or AdSense ads buy traffic from the major search engines and hope to send some percent of that traffic clicking out...

Absolute Link

A link which shows the full URL of the page being linked at. Some links only show relative link paths instead of having the entire reference URL within the a href tag. Due to canonicalization and hijacking related issues it is typically preferred to use absolute links over relative...

Alexa

It’s a ranking system that audits and makes public the frequency of visits on various web sites. Source:  Avangate An Amazon.com owned search service which measures website traffic. Alexa is heavily biased toward sites that focus on marketing and webmaster communities. While not being highly accurate it is free.  

Adwords

Google's advertisement and link auction network. Most of Google's ads are keyword targeted and sold on a cost per click basis in an auction which factors in ad clickthrough rate as well as max bid. Google is looking into expanding their ad network to include video ads, demographic targeting,...

AJAX

Asynchronous JavaScript and XML is a technique which allows a web page to request additional data from a server without requiring a new page to load.

Inbound Marketing: A/B Testing Definition

A/B Testing Definition A/B testing is a way to compare two versions of a web page to determine which version is more effective. For example, you show two versions of a web page to similar visitors to see which one performs better. Synonym: Split Testing Learn More... How to Increase Conversions by Running...

Authorities

Topical authorities are sites which are well trusted and well cited by experts within their topical community. A topical authority is a page which is referenced from many topical experts and hub sites. A topical hub is page which references many authorities. Example potential topical authorities: the largest brands in your...

Age

Some social networks or search systems may take site age, page age, user account age, and related historical data into account when determining how much to trust that person, website, or document. Some specialty search engines, like blog search engines, may also boost the relevancy of new documents. Fresh content...

Adsense

Google's contextual advertising network. Publishers large and small may automatically publish relevant advertisements near their content and share the profits from those ad clicks with Google. AdSense offers a highly scalable automated ad revenue stream which will help some publishers establish a baseline for the value of their ad inventory....

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