| skyscraper content | A link building technique that involves improving already popular content to attract even more backlinks to it. |
| citation | A mention of a business name on the web with or without a link. A full citation contains information from a NAP listing (Name Address Phone #). Citations are important for local businesses as they are a big factor that search engines use to determine local search rankings. |
| keyword density | How often a word or phrase appears within the content of a webpage. At best, this unproven concept is outdated, if ever really mattered to search engines. There is no ideal percentage that will help a webpage rank better. |
| conversion | When a user completes a desired action on a website. Examples of conversions include: |
| hits algorithm | Hyperlink-Induced Topic Search is a link analysis algorithm that assesses a value not just based on content and inbound links (authorities), but also its outbound links (hubs). |