How does search engines gather data from internet?

Different search engines employed different technologies to search for the websites that matches the user’s query. Almost all the search engines depend upon crawlers. A crawler is computer software which scans almost all the pages on World Wide Web. Please note that I used almost in the previous sentence as the crawlers do not scan all the pages in the world of internet. They only go to the pages which they think are important and has something to share with viewers. That means, even if you have spent thousands of dollars or pounds on your website creation and its development, that nothing to the crawlers. They are hungry for content. Crawlers low text. They like to go to a website which has text. The more text you have, the more is the chance of a crawler visiting your site and indexing it in search engine.

Google uses crawlers which are very powerful and intelligent when compared to many of its competitors like Yahoo, MSN, Bing, Ask etc. It calls its crawlers as spiders or bolts. So if you see a word called ‘Google Bolt’ or Spider anywhere, don’t be surprised. They are the pet names of Google’s crawlers.

These crawlers go through almost all the pages on web and gather information and store them in their index. Based on the information obtained from these crawlers or spiders, different search engines employ different methods to rank a website. Some may rank a website based on the occurrence of a keyword in that particular website or page, some on meta data, some on inbound links, some on outbound links, some on text, some on title, some on description of title and some on the combination of any or all these methods. And almost all the major search engines keep changing their methods of ranking sites. So one must be up to date about these methods and modify their website accordingly to stay at the top of search engines. You can visit the help pages of actual search engine and keep yourself up to date. Though these search engines don’t tell you how they rank websites, you can get very valuable information from the questions and answers posted by many other people. The bottom line is grab as much as information as you can from all the sides. All you need is information, information and information.