Importance of Robots.txt

2008-02-08T22:03:00.001-08:00

Importance of Robots.txt

Robots.txt file is a very important file if you want to have a good ranking on search engines, many websites don't offer this file. A Robots.txt file is helpful to keep out unwanted search engine spiders like email retrievers, image strippers, etc. It defines which paths are off limits for spiders to visit. This is useful if you want to hide some personal information or some secret files.

What is Robots.txt

Robots.txt file is a special text file that is always located in your Web server's root directory. Robots.txt file contains restrictions for Web Spiders, telling them where they have permission to search. A Robots.txt is like defining rules for search engine spiders (robots) what to follow and what not to. It should be noted that Web Robots are not required to respect Robots.txt files, but most well written Web Spiders follow the rules you define.

How to Create Robots.txt

The format for the robots.txt file is special. It consists of records. Each record consists of two fields : a User-agent line and one or more Disallow: lines. The format is:
":"

The robots.txt file should be created in Unix line ender mode! Most good text editors will have a Unix mode or your FTP client *should* do the conversion for you. Do not attempt to use an HTML editor that does not specifically have a text mode to create a robots.txt file.

User-agent

The User-agent line specifies the robot. For example:
User-agent: googlebot

You may also use the wildcard character "*" to specify all robots:
User-agent: *

You can find user agent names in your own logs by checking for requests to robots.txt. Most major search engines have short names for their spiders.

Disallow

The second part of a record consists of Disallow: directive lines. These lines specify files and/or directories. For example, the following line instructs spiders that it can not download contactinfo.htm:
Disallow: contactinfo.htm
You may also specify directories:
Disallow: /cgi-bin/
Which would block spiders from your cgi-bin directory.

There is a wildcard nature to the Disallow directive. The standard dictates that /bob would disallow /bob.html and /bob/indes.html (both the file bob and files in the bob directory will not be indexed).

If you leave the Disallow line blank, it indicates that ALL files may be retrieved. At least one disallow line must be present for each User-agent directive to be correct. A completely empty Robots.txt file is the same as if it were not present.

White Space & Comments

Any line in the robots.txt that begins with # is considered to be a comment only. The standard allows for comments at the end of directive lines, but this is really bad style:
Disallow: bob #comment

Some spider will not interpret the above line correctly and instead will attempt to disallow "bob#comment". The moral is to place comments on lines by themselves.
White space at the beginning of a line is allowed, but not recommended.
Disallow: bob #comment

Examples

The following allows all robots to visit all files because the wildcard "*" specifies all robots.
User-agent: *
Disallow:

This one keeps all robots out.
User-agent: *
Disallow: /

The next one bars all robots from the cgi-bin and images directories:
User-agent: *
Disallow: /cgi-bin/
Disallow: /images/

This one bans Roverdog from all files on the server:
User-agent: Roverdog
Disallow: /

This one bans keeps googlebot from getting at the personal.htm file:
User-agent: googlebot
Disallow: personal.htm

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2008-01-08T04:32:00.000-08:00

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SEO (Search engine optimization) is simply "the use of search engines to draw traffic to a web site. It is the technique of attaining a higher ranking in search engines and directories via changes to a site to make it more search engine compatible".
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A word used by a search engine in its search for relevant Web pages is called Keyword. Keyword tags are an important element in all web pages. keyword tags are one of the best ways of optimizing the number of visitors on your site.
Importance of Robots.txt
Robots.txt file is a very important file if you want to have a good ranking on search engines, many websites don't offer this file. A Robots.txt file is helpful to keep out unwanted search engine spiders like email retrievers, image strippers, etc. It defines which paths are off limits for spiders to visit. This is useful if you want to hide some personal information or some secret files.
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Pay-per-click advertising is one of the most cost-effective methods of getting leads known to Internet business owners. It gives you instant traffic, and allows you to test your business model in real time.
What is Google Page Rank?
Google Page Rank is simply Google's way of displaying how important a webpage is. Google assumes that when 1 webpage links to another webpage, it's actually "casting a vote" for the webpage. The more votes you have for your webpage, the more important your webpage will be.
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Now let's talk about "almost" EXACTLY how page rank is calculated. Over 99% of the webmasters on the internet do not understand how Page Rank(PR) is calculated. I'm going to refer to Page Rank as PR throughout the rest of this article, for the sake of not having to type it over and over.
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Adding relevant titles, descriptions, characters formatting and keywords.
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Importance of Robots.txt

Importance of Robots.txt

What is Robots.txt

How to Create Robots.txt

User-agent

Disallow

White Space & Comments

Examples

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