Web Spiders also known as Web Crawlers. Web spiders were first invented by Google. These are a computer program which crawls & index websites in a methodical & automated manner. These web spiders have been given several names like Ants, Automatic Indexers, bots, worms & web robot.

With more & more companies opting for Internet Marketing , there are millions of websites created everyday to create an online presence. In order to meet the demanding requirements of growing number of websites & to ensure that each & every site is cached & indexed properly. This process of crawling is also known as spidering. Search engines use web crawling as a means to up-to-date data. These crawlers help in automating maintenance tasks on a website such as checking links & validating codes. Not only this, the web spiders also help to gather specific type of information like harvesting email addresses.

Web spiders are a kind of bot or software agent that starts indexing the list of URL’s to visit. The websites are known as Seeds & the list of URL’s to visit are called Crawl Frontier. The web spiders play an integral role in introducing any website to the visitors on Internet Marketing.

It helps Seo Optimization experts to get all the pages or rather specific pages indexed & thus help in better rankings. Web Robots also have a feature where we can invite robots to any new website or a web page on a given time & date. To ensure better indexing so that no page is left unnoticed, SEO experts create Sitemaps & Robots.

This technology has not only helped search engines to index millions of websites in flick of seconds but also help existing websites to optimize their pages in a better way so that crawlers can continue caching their websites & display relevant pages for specific searches.