Template modernized September 2026

SEO Glossary: Search Engine Optimization Terms and Definitions

This page preserves the existing Plus2Net database-driven glossary while moving it into the current article layout. Use the term index to jump directly to a definition, then follow the related guides for deeper explanation.

How this page works

The glossary entries still come from the existing Plus2Net database

The original page reads SEO terms from the faqplus table for category cat_id=1. That database content is preserved rather than silently replacing definitions we cannot see in the PHP source.

Separate content-audit requirement: the page template is modernized, but the glossary definitions themselves should be reviewed periodically in the database. SEO terminology changes over time, so outdated entries should be revised or removed at the source rather than hidden by a new layout.
Quick term index

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Glossary

SEO terms

Black Hat Seo

Alos know as Black Hat Webspam, are techniques used to take advantage of loopholes of present ranking algorithm of search engines without adding any value to improve user experience or quality of site etc.
These are not in long term interest and likely to fail in long run with improvment and changes in search ranking algo.
Read more on Black Hat Webspam here.

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EAT : Expertise Authoritativeness Trustworthiness

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EMD: Exact Match Domain

Domains names are used with specific keywords to target for better ranking in Search pages. These keyword stuffed domain names are some time targeted in algorithm updates.
There is some observations that Google Penguin update targets these EMDs

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MC : Main content

Main content is the part of the page which directly helps the user to achieve its purpose.

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Panda Algorithm Update of Google

This is one of the main update of google algorithm, started around Feb 25th 2011 mainly for USA sites and globally on April 11th 2011. Its effect was visible by 13th April. As per google it affected 12% of the queries.
After this there were many small and big updates of Panda was rolled out by google affecting many sites.
As per google official blog on this update the main purpose was to improve ranking of high quality sites.

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PBN : Private Blog Network

A set of blogs or sites setup to point link to a main site to increase its ranking. The main site is the focus of this network of sites.

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Penguin Algorithm update of google

This algo update was announced on 24th April 2012 and its effect was vissible around 27th May. As per google this has affected 3 % of search queries.
This update is targeted towards sites engaged in ' black hat webspam' methods to increase ranking in search results.
More details on Penguin update from google

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QDF : Query deserves Freshness

Freshness of the content does not matter for all type of contents. Some news , events , sports etc deserves fresh content but in other hand there are some ever green contents like evolution of earth, historical events and past data. So it depends on the query which will return fresh or updated content or aver green content.

Check your queries for which you are getting traffic requires freshness or not. If it is not required then no need to update your content.

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SC : Supplementary Content

Content which increases user experience but not directly helps the page to achieve its purpose.

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UGC

UGC : User generated content. Visiters write their feedback or answer queries or give their openion about a product or issues. These are content generated not only by site but by visitors. Some sites total depends on UGC or partly on UGC.

Forums , blog posts, pages created for product review etc.

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White Hat SEO

Search engine Optimization tech-nicks which uses legitimate method and focus on improved user experience for better ranking of pages to increase traffic.

This type of page optimization focus on long term search engine ranking by providing good and useful content for the visitors.
Opposite to this is black hat Optimization.

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YMYL : Your Money or Your Life

These types of pages require high level of quality standard. Examples are shopping, financial transaction, medical, legal answer sites.

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Modern SEO concepts

Use the glossary together with current topic guides

Short definitions are useful for unfamiliar terms, but important SEO decisions usually need a full guide. For example: