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2. Web crawler - Wikipedia

   en.wikipedia.org/wiki/Web_crawler

   A Web crawler starts with a list of URLs to visit. Those first URLs are called the seeds.As the crawler visits these URLs, by communicating with web servers that respond to those URLs, it identifies all the hyperlinks in the retrieved web pages and adds them to the list of URLs to visit, called the crawl frontier.

3. Scrapy - Wikipedia

   en.wikipedia.org/wiki/Scrapy

   Scrapy (/ ˈ s k r eɪ p aɪ / [2] SKRAY-peye) is a free and open-source web-crawling framework written in Python. Originally designed for web scraping, it can also be used to extract data using APIs or as a general-purpose web crawler. [3] It is currently maintained by Zyte (formerly Scrapinghub), a web-scraping development and services company.

4. Search engine optimization - Wikipedia

   en.wikipedia.org/wiki/Search_engine_optimization

   Search engine crawlers may look at a number of different factors when crawling a site. Not every page is indexed by search engines. The distance of pages from the root directory of a site may also be a factor in whether or not pages get crawled. [38] Mobile devices are used for the majority of Google searches. [39]

5. Web scraping - Wikipedia

   en.wikipedia.org/wiki/Web_scraping

   Web scraping is the process of automatically mining data or collecting information from the World Wide Web. It is a field with active developments sharing a common goal with the semantic web vision, an ambitious initiative that still requires breakthroughs in text processing, semantic understanding, artificial intelligence and human-computer interactions.

6. Search engine scraping - Wikipedia

   en.wikipedia.org/wiki/Search_engine_scraping

   This is a specific form of screen scraping or web scraping dedicated to search engines only. Most commonly larger search engine optimization (SEO) providers depend on regularly scraping keywords from search engines to monitor the competitive position of their customers' websites for relevant keywords or their indexing status.

7. Why is Aolbot-News crawling my page? - AOL Help

   help.aol.com/articles/aolbot

   Aolbot-News is designed to make reasonable requests that don't overburden websites. However, if you're concerned about site performance, you can restrict the pages that Aolbot-News crawls by disallowing crawling of certain subdirectories, or by slowing the rate that Aolbot-News crawls using a Crawl-Delay (specifies the minimum number of seconds ...