| pogo rate | The percentage of users who quickly clicked back to the search results and clicked another result right away. Higher POGO rates indicate poor relevancy and are a negative engagement metric. |
| login forms | Refers to pages that require login authentication before a visitor can access the content. |
| results | The amount of all search results returned for a keyword |
| open directory project | (ODP) See DMOZ. One of the oldest and most comprehensive human-reviewed directories on the web. |
| status codes | The response codes sent by a server whenever a link is clicked, a webpage or file is requested, or a form is submitted. Common HTTP status codes important to SEO: |
