| impressions | Number of times a website, or ad for a website, is displayed in a search engine for a particular keyword. |
| mfa | Acronym. Made For Advertising (page). A broad class of pages, in my opinion, as some of them actually have sensible content (like cheap directories, article abstract pages, article reprint pages, press release reprints, etc.). The real purpose of the pages, of course, is to draw traffic in the hope people will click on the Javascript ads from Yahoo!, Google, or whomever. |
| google penguin | Google Penguin is the name of a series of Google algorithm updates that evaluate a websites use of off-site (some on-site) optimizations. Websites that use techniques such as unnatural linking, keyword stuffing (trying to optimize for too many keywords on one page), low-quality link building, spam link building, etc. saw a loss in search rankings. |
| gary illyes | A famous google employee |
| entities | People, places, organizations, websites, events, groups, facts, and other things. |
