When you are in the process of learning SEO, a question comes into our mind that “What is Search Engine Crawler or Bots?”, “How does it visit a website?” And “What are its criteria of examining the webpage?”
A Search Engine Crawler is an automated and calculated program used to examine a new webpage. The process by which it crawls is called web crawling or spidering It has fixed algorithms, sets of constraints and certain instructions for examining the webpage. Some crawlers are like: GoogleBot is used by Google Search Engine, MSNBot is used by MSN Search Engine, Slurp is used by yahoo Search Engine and Teoma crawler is used by Ask Jeeves.
The crawler visits the webpage through its URL. It stores and send this URL to Search Engine for indexing. First it checks the robot.txt file of the webpage. If it allows, only then the crawler enters in to the page. It examines the webpage from Top to Bottom and then from Left to Right. It checks Meta tags, total size of the page, total links on the page, body texts, distinct words and unique content of the webpage. So the content of the webpage should be seo friendly. Avoid complex designing of the page, script images with no Alt tags. In the end, we can say that Crawlers are the best friends of website owners.
Showing posts with label search engines. Show all posts
Showing posts with label search engines. Show all posts
Friday, October 23, 2009
Monday, September 21, 2009
Classification of Search Engines
Understanding SEO
The major search engines that you’re probably familiar with today were created from 1993. Some of them are below:
Yahoo!—1994
AltaVista — 1995
Ask Jeeves — 1997
Google —1997
MSN Search—1998
To understand what SEO is, we should first know about Search Engines. When you type a word or phrase into a search box of any search engine and click a button. Within a few seconds, you will see thousands of pages will appear. Then all you have to do is click through those results to find what you want. There is an agent which looks every URL on the web page and collects the information like keywords and phrases on each page of the website in its database. This agent is so called, a crawler, spider, or robot.
Search Engines are classified into three categories:
1) Primary Search Engines – There are three major search engines like Google, Yahoo and MSN. These are called primary search engines. These three create maximum traffic for your website and our all SEO will focus on these three search engines.
2) Secondary Search Engines – The search engines like Lycos, LookSmart, Miva, Ask.com, and Espotting are called secondary search engines. They are useful only for regional and narrowly focused searches. They don’t generate as much traffic as the primary search engines.
3) Targeted Search Engines - These search engines are very narrowly focused to a general topic. Examples of targeted search engines include CitySearch, Yahoo! Travel and like other types of search engines whose ranking criteria vary from one search engine to another.
SEO is not as easier as you understand. It’s a continuous effort. A mildly change can affect your search engine ranking. SEO is a holistic approach to improving your search engine rankings. As such, it requires attention to your whole site. So I recommend you that after the initial implementation of SEO during the building of website you should do proper SEO daily in your routine time.
The major search engines that you’re probably familiar with today were created from 1993. Some of them are below:
Yahoo!—1994
AltaVista — 1995
Ask Jeeves — 1997
Google —1997
MSN Search—1998
To understand what SEO is, we should first know about Search Engines. When you type a word or phrase into a search box of any search engine and click a button. Within a few seconds, you will see thousands of pages will appear. Then all you have to do is click through those results to find what you want. There is an agent which looks every URL on the web page and collects the information like keywords and phrases on each page of the website in its database. This agent is so called, a crawler, spider, or robot.
Search Engines are classified into three categories:
1) Primary Search Engines – There are three major search engines like Google, Yahoo and MSN. These are called primary search engines. These three create maximum traffic for your website and our all SEO will focus on these three search engines.
2) Secondary Search Engines – The search engines like Lycos, LookSmart, Miva, Ask.com, and Espotting are called secondary search engines. They are useful only for regional and narrowly focused searches. They don’t generate as much traffic as the primary search engines.
3) Targeted Search Engines - These search engines are very narrowly focused to a general topic. Examples of targeted search engines include CitySearch, Yahoo! Travel and like other types of search engines whose ranking criteria vary from one search engine to another.
SEO is not as easier as you understand. It’s a continuous effort. A mildly change can affect your search engine ranking. SEO is a holistic approach to improving your search engine rankings. As such, it requires attention to your whole site. So I recommend you that after the initial implementation of SEO during the building of website you should do proper SEO daily in your routine time.
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