| on-serp seo | Optimization practices that take place in search engine results pages. |
| quality index | Quality Index is like Yahoos version of Googles Adwords Quality Score. It can affect a users cost per click and ranking. |
| not provided | Before Google moved to secure search in 2011, it was possible to know which queries visitors used to find your website. However, that has since changed with Google now replacing this information with the not provided note. |
| dwell time | The amount of time that elapses between when a user clicks on a search result and then returns to the SERP from a website. Short dwell time (e.g., less than 5 seconds) can be an indicator of low-quality content to search engines. |
| http status codes | A response from a server to an incoming request indicating the status of the requested page. In human terms: if you cant get to the page youve requested, these errors will tell you why. |
