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tony_S
02-15-2019, 04:41 AM
what do you understand by crawling?

ametuniversity
03-13-2019, 08:15 AM
The first one is the crawlers used by the main search engines, such as Google, Bing or Yandex. The second type is private commercial crawlers, used, for example, by SEO toolsets to establish and maintain fresh index of links and backlinks on the internet.