| hits | Hits are visitors to a website. A successful campaign could be said to be one which delivered a lot of hits. Hits are not necessarily specific to a particular platform, they could be search engine visits, PPC, social media, or from people clicking a link on another website. |
| alexa | Alexa is a subsidiary company of Amazon that provides traffic rankings based on the analysis of people who access the sites while using the Alexa toolbar. The accuracy of this data may be questioned due to the fact that the analysis is made only on the internet visitors that use the Alexa toolbar. |
| search corpus | Noun phrase. The body of queries (keyword expressions) that people use to search the Web. |
| xml sitemap | A list of all the pages on a website that search engines need to know. |
| reverse index | A list of keywords associated with the content in which theyre used. |
