Google, Yahoo, Windows Live are all examples of search engines. Using specialised software that crawl the World Wide Web, search engines indexes all the words it finds on Web pages. Of recent, that is in the last few years, search engines have become extremely sophisticated and not only index all the words on a page but also try to correlate that with other bits of information regarding the said Web page gathered from other parts of the Web. Thus, using complex algorithms search engines try to guess the most accurate result that will satisfy the search request of the user. Search engines have become one of the core pieces of the internet as everyone needs to search for some information or the other at some point in time.