What is the main usage of search engine spiders?

[WoodsPainting]

What is the main usage of search engine spiders?

[sophiawils59]

Search engine spiders, sometimes called crawlers, are used by Internet search engines to collect information about Web sites and individual Web pages.

[Naksh]

What is the main usage of search engine spiders?

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[dennis123]

Hi Friends,
A spider is a program that visits web sites & reads their pages and other information in order to create entries for a search engine index.

The major search engines on the Web all have such a program, which is also known as a "crawler" or a "bot." Spiders are typically programmed to visit sites that have been submitted by their owners as new or updated.

Entire sites or specific pages can be selectively visited and indexed. Spiders are called spiders because they usually visit many sites in parallel at the same time, their "legs" spanning a large area of the "web."

[nicksavoia]

Search engine spiders are used to crawl your website, after submitting your website to webmaster tools.

[RH-Calvin]

Spiders crawl through various webpages source and provide information to search engines. They are automated programs that are run by search engines.

[mollierhodes]

In order to deliver information to users, the search engines first have to know what information is out there. Each search engine has its own ‘spider’ which is a program that enables the search engines to ‘crawl’ or read the backend code of websites. (You can see the code of any website by right-clicking on the website and viewing the source.) The search engine spider travels from page to page and website to website by way of links, much like you would click links to navigate a website. The search engine spider then follows those links to travel to other pages and other websites.

[rickylarson]

The search engine spiders are robots that crawl a whole website to get ranked or keep in the sandbox.

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[godwin]

Search engine spiders, sometimes called crawlers, are used by Internet search engines to collect information about Web sites and individual Web pages. The search engines need information from all the sites and pages; otherwise they wouldn't know what pages to display in response to a search query or with what priority.