| xml | Extensible Markup Language is a markup language search engines use to understand website data. |
| e commerce | These types of web sites are those devoted solely to retail sales. |
| pogo-sticking | When, after entering a query, a searcher bounces back and forth between a SERP and the pages listed in those search results. |
| 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: |
| matt cutts | Matt Cutts was previously Head of Googles Webspam Team. |
