What is web spider ?
Web Robots also known as website Wanderers, Crawlers, or Spiders,
are software programs that navigate the website automatically. Search engines
like as Google use them to index the website content and articles spammers use
them to check out for e-mail addresses,and they have a lot of other uses.
A spider is a software program that
visits websites and scans their pages and other information in order to create
entries for a search engine index chart. The important search engines on the
web all have like a program, which is also recognized as a crawler or a bot .
Spiders are characteristically programmed to visit sites that have
been presented by their owners as new or updated.Complete sites or specific
pages can be selectively visited and indexed. Spiders can crawl through a
sites pages in various ways.
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