| uniform resource locator | URL: The recognizable website address used to access a landing page. |
| cpa | Cost per acquisition (or cost per action) refers to the price that a publisher pays to an advertiser for each unique user action the advertiser provides. |
| optimization | The process of improving the keyword density of a web page and modifying the page in such a way that it ranks well (on the SERPs) for those keywords it has been positioned for. Basically making a page spider-friendly by, for example, using text links rather than image links in hopes that it will improve in the rank within the search engines. |
| skyscraper content | A link building technique that involves improving already popular content to attract even more backlinks to it. |
| de-indexed | Refers to a page or group of pages being removed from Googles index. |
