| qs | (Quality Score) A variable used by Google AdWords that influences both ad rank and CPC. The formula used to determine ad order is (bid x QS). |
| pa | Similar to DA, Page Authority (PA) predicts an individual pages ranking ability. |
| search engine spam | Pages that are created to deceive search engines to give inappropriate or non-relevant content because of a keyword search. |
| one way link | This is a link that, as the name suggests, only takes a website visitor one way; it takes the visitor to a site with no way of getting back to where they came from. |
| site speed | How quickly your website loads for visitors. Can be affected by a variety of factors including server issues, rendering large image files and running too many onpage scripts. Has been an SEO influencing signal for some time and not likely to change. |
