Getting Started with Web Intelligence
It is important to start with an understanding of how search engines work in relation to the Internet as a whole. Search engines build their database of websites, known as the index, through a process called crawling. Google and other search engines find new pages to index using “bots” or “spiders” to crawl the Web. The bots start with a list of URLs determined by previous crawls, and when bots detect new links on these pages, they are added to the list of sites to index moving forward. Then, search engine algorithms produce a ranked list of Web pages from their index based on search terms users provide.