To give you the most useful information, Search algorithms look at many factors, including the words of your query, relevance and usability of pages, expertise of sources, and your location and settings. These ranking systems are made up of not one, but a whole series of algorithms. Google ranking systems are designed to do just that: sort through hundreds of billions of webpages in our Search index to find the most relevant, useful results in a fraction of a second, and present them in a way that helps you find what you’re looking for. With the amount of information available on the web, finding what you need would be nearly impossible without some help sorting through it.