What is a search engine what does it do?

Answer 1

A search engine is something online which hunts throught thousands of stored entires and finds results according to the terms someone has searches. Google is the most popular example of an internet search engine, shotrly followed by Yahoo and many other smaller businesses which have attempted to beat Google but which also failed miserably. Search engines usually use complicated algorithms to decide what links they should provide the user with, as well as the website's description, viewing options (like cached pages, basic HTML, etc) and other options if they are applicable. Sometime, searching can be enhanced by including various symbols in and around search terms. For example, adding a '+' in Google will search for the term before the '+' and the term after the '+' as if these two terms should be very closely linked together. Also, adding a '-' will exclude search results which have the term after the '-'.