Robots, Spiders, Crawlers and HTTP_User_Agents

An overview of the major search engine crawlers, robots, spiders, wanderers and bots you may find in your log files, along with a few helpful tools for using robots.txt on your website.

FYI, crawlers, robots, spiders, and bots are basically programs that automatically traverses the Internet's hypertext coding structure and downloads a seed page or document, and recursively retrieves and extracts all the allowed links referenced on that particular webpage via the source code.

There you have the cheap definition.

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Robots, Spiders, Crawlers and HTTP_User_Agents

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