It refers to the unindexed web databases and other content that search engines can't crawl through and catalog. The term ‘deep web’ doesn’t mean anything nefarious - it’s estimated to make up about 99% of the entire web. Still, this open and cataloged “crawled” web content is still estimated to make up less than 1% of the internet. This accounts for well over 80 percent of the company’s revenue, linking people who are searching with the millions of sites out there that pay Google to list their content. Knowing where online materials are – and who is searching for them – makes it possible for search engines like Google to sell advertisements. Most sites do this by deliberately placing “meta tags” in their website code to make it easier for crawlers to catalog them properly. This makes perfect sense as the entire purpose of creating a website is so that people can access your content and/or buy your products. Most corporate and public sites work hard to make sure that these web crawlers can easily find them. This makes it easy for them (and you) to find websites. Crawlers can automatically scan websites and their links, then record them. They do this through using “crawlers”, sometimes also known as “spiders” or “robots”. But if you want to find something specific, you can also ask a Librarian to help you locate it.īrowsers such as Google, Bing, DuckDuckGo act like virtual librarians, sorting and cataloging materials so they can be easily searched. If you have time on your hands, you can just wander through the aisles of a library looking at every book.
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