| unique visitors | Total number of unique users that have visited a webpage in a given period. |
| h3 tag | The heading element in HTML defines a structure for headings in a document. Starting with H1 as the most important heading, descending to H6, heading tags have been a standard part of HTML since HTML 2.0. |
| copy testing | Copy testing is a test carried out on an ad to find out how effective it will be before it becomes public. It factors in key indicators like reactions, consumer feedback, and others to help decide if an ad is effective. |
| edgerank | EdgeRank is an algorithm used by Facebook to determine which stories should show up on a users feed. |
| blackhat seo | SEO tactics that dont particularly follow the approved guidelines of Google or other search engines. |
