Search Engine Top Ranking Search Engine allows users to hunt for information on the Internet by means of key words and phrases. Search engines explore the Internet and return a list of Web pages that are related to the key words or phrases entered. Every search engine has its own algorithm - a formula for indexing and scoring web sites. Search engines attempt to give their visitors most relevant results by constantly improving their formulas. They analyze page elements and other factors to determine what combination is best for most appropriate results. Search engines form partnerships and buy technologies to improve their algorithms. They combine many factors with a different weight placed on each one.á