| usability | How easy it is for people to use your website. Site design, browser compatibility, disability enhancements, and other factors all play a role in improving usability and making your site accessible for as many people as possible. |
| social signal | Any factors that demonstrate authority and influence on popular social networking websites. For example, the social authority of a user on Twitter. |
| website | A collection of webpages hosted together on the World Wide Web. |
| ask | The search engine formerly known as Ask Jeeves. Offers search for web sites, news, weather reports, pictures, stocks, maps and directions, people or products. Also has a dictionary search. |
| term naturality | Noun phrase. The sum of the measured natural value of all Natural members in a group, as used in the Theorem of Search Engine Optimization formula. Cf. Naturality. |
