| Above the fold | A term traditionally used to describe the top portion of a newspaper. In email … |
| Absolute link | A link which shows the full URL of the page being linked at. Some … |
| AdCenter | Microsoft's cost per click ad network. While it has a few cool features (including … |
| AdSense | Google's contextual advertising network. Publishers large and small may automatically publish relevant advertisements near … |
| AdWords | Google's advertisement and link auction network. Most of Google's ads … |
| Affiliate Marketing | Affiliate marketing programs allows merchants to expand their market reach and mindshare by paying … |
| Age | Some social networks or search systems may take site age, page age, user account … |
| AJAX | Asynchronous JavaScript and XML is a technique which allows a web page to request … |
| Alexa | Alexa - the web information company - is a search engine that provides … |
| algorithm | The proprietary formula (mathematical equation) that a search engine uses to calculate the relevance … |
| AlltheWeb | Search engine which was created by Fast, then bought by Overture, which was bought … |
| Alt Attribute | Blind people and most major search engines are not able to easily distinguish what … |
| Alt tag | Alt tag refers to the text that is associated with an image. This originated … |