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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. Focused crawler - Wikipedia

    en.wikipedia.org/wiki/Focused_crawler

    A focused crawler is a web crawler that collects Web pages that satisfy some specific property, by carefully prioritizing the crawl frontier and managing the hyperlink exploration process. [1] Some predicates may be based on simple, deterministic and surface properties. For example, a crawler's mission may be to crawl pages from only the .jp ...

  4. Crawl frontier - Wikipedia

    en.wikipedia.org/wiki/Crawl_frontier

    This activity is known as crawling. The policies can include such things as which pages should be visited next, the priorities for each page to be searched, and how often the page is to be visited. [citation needed] The efficiency of the crawl frontier is especially important since one of the characteristics of the Web that make web crawling a ...

  5. Search engine optimization - Wikipedia

    en.wikipedia.org/wiki/Search_engine_optimization

    Search engine optimization (SEO) is the process of improving the quality and quantity of website traffic to a website or a web page from search engines. [1] [2] SEO targets unpaid search traffic (usually referred to as "organic" results) rather than direct traffic, referral traffic, social media traffic, or paid traffic.

  6. Search engine scraping - Wikipedia

    en.wikipedia.org/wiki/Search_engine_scraping

    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. The process of entering a website and extracting data in an automated fashion is also often called "crawling ...

  7. 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 ...