Some Important SEO Metrics

Some Important SEO Metrics

PR (Page Rank)

• It ranges from 0 to 10 integer numbers.
• It describes the popularity of a web page.
• It takes into account the total links to a page irrespective of their quality.
• It is calculated for different web pages not for the whole website.
• It is calculated by Google.

mR (MozRank)

• It ranges from 0 to 10 two decimal numbers.
• It takes into account the number of links to a page's link profile.
• It is calculated by SEOmoz.

mT (MozTrust)

• It ranges from 0 to 10 two decimal numbers.
• It is calculated by SEOmoz.

Domain level mozRank/Domain level mozTrust (DmR/DmT)

• It ranges from 0 to 10 two decimal numbers.
• It is calculated for entire domain by SEOmoz.

PA (Page Authority)

• It ranges fro 0 to 100 integer numbers.
• It is relevant for optimization purposes.
• It is calculated by SEOmoz.

DA (Domain Authority)

• It ranges from 0 to 100 integer numbers.
• It is calculated for entire domain.
• It focuses on Competitive Analysis and Partner Selection.
• It is calculated by SEOmoz.

AR (Alexa Rank)

• It describes the global ranking of a website.
• It is calculated by Alexa. 

Concept of RoR (Ruby on Rails)

Concept of RoR (Ruby on Rails)

The concept of Ruby on Rails was originally developed by David Heinemeier Hansson in July 2004. Ruby is a programming language whereas Ruby on Rails also known as Rails is an open source web application framework.

Basic Uses

• It allows creating of pages as well as applications in order to collect useful information from the server.
• To query or communicate the database.

Building Concepts

Ruby on Rails is based on Software Engineering Patterns as listed below:-

• ARP (Active Record Pattern)
• CoC (Convention over Configuration)
• DRY (Don't Repeat Yourself)
• MVC (Model View Controller)

Concept of Robots.txt

Concept of Robots.txt

The Robots.txt is a simple file containing text matter and is always placed/applied at the root directory only. The main function of Robots.txt is to tell various Search Engines as well as other Robots that which pages are to visit & index and which are to leave.

Example

www.example.com/robots.txt

Classification of Robots.txt

Robots.txt is classified into 3 major parts as listed below:-

1. Websites or Directories (Robots.txt)
2. Single Page (Robots Metatag)
3. Single Link or URL (Nofollow Attribute)

Syntax

User-agent: *

Disallow: /

<meta name="robots" content="noindex,nofollow">
or

<meta name="robots" content="none">

<a href=http://www.example.com/ rel="nofollow">Example</a>

Note

For more concepts about Robots.txt, visit http://www.mcanerin.com/.

Concept of Dublin Core

Concept of Dublin Core

“The Dublin Core Metadata Element Set is a collection of 15 properties which are basically used in resource description. Dublin Core is maintained by DCMI (Dublin Core Metadata Initiative) and is based on DCAM (DCMI Abstract Model)”.

Reason for Name

Dublin

An invitational workshop was held at Dublin (Ohio) in 1995.

Core

The elements involved are very crucial, broad and generic that can be used for describing a wide range of resources.

Elements of Dublin Core

1. Contributor
2. Coverage
3. Creator
4. Date
5. Description
6. Format
7. Identifier
8. Language
9. Publisher
10. Relation
11. Rights
12. Source
13. Subject
14. Title
15. Type

Concept of Canonicalization

Concept of Canonicalization

Canonicalization is an important concept related to a website from SEO (Search Engine Optimization) perspective. It is governed by two major factors:-

1. Canonical Issue
2. Canonical Tag

Canonical Issue

Canonical Issue is a situation wherein any website gives different results with WWW and without WWW.

Example

www.example.com/

example.com/

Canonical Tag

The syntax of Canonical Tag is described below:-

<link rel=”canonical” href=”http://www.example.com/” />