Indexing in SEO training

Indexing is a process of compiling the fetched information from internet. It is just like the index of the book.

Crawler processes each of the pages it crawls in order to compile a massive index of all the words it sees and their location on each page. Crawler can process many, but not all, content types.

The processing of crawling means how often the page should be crawled, nature of page, relevant or irrelevant links, meta descriptions, content, geographical location and of course ALT tags, titles, headings etc. Such information is used to display results. The results are determined on the basis of fetched data or indexed data within search engine. Search engine uses crawler to do the job.

Crawler is an algorithmic based software designed to fetch information about pages over internet to produce most efficient search results.


Also See:

How to build Search Engine Friendly web page
Understanding HTML for SEO

Sitemap in SEO Training

Sitemap is a file which provides links information embedded in the website. It contains links of all pages. Search Engine crawler look in to this file to scroll all pages inside your website.

The sitemap file is of two types.

1. .txt file
2. .xml file

.txt file is a simple notepad file. Webmaster paste all links of the site in this file one in each line and save this file as text file.

.xml file is a file with all links of the website along with different parameters to set priority of a specific page and change frequency of the page. Change frequency means how often the page will be updated.
This helps the crawler to understand the attributes of page and its a search engine friendly activity to save time of crawler.

A simple example is shown below:

<url>

  <loc>http://iqaisarseo.blogspot.com/</loc>

  <lastmod>2011-01-25T10:53:00+00:00</lastmod>

  <changefreq>daily</changefreq>
</url> 

The change frequency can be set as once, daily, weekly, monthly etc. "lastmod" means last modification date and time. Add this information with every link of your website in sitemap.xml file.

Webmaster make the sitemap file with either .txt or .xml extension and upload it through his ftp account in his website. This page is not displayed for visitors. (example: sitemap.txt or sitemap.xml

Sitemap file is done during on page optimization.

For blogspot website sitemap submission is a bit complicated process in google webmaster tool which is made easy here

One can generate his sitemap.xml file through internet by hundreds of free sitemap.xml generating websites. Its easy to use !!!