Search engine optimization (SEO) is a technique that improves the number and quality of guests to a web page. Ranking top on search engines’ search listings does this. If a web site comes on top rank of search results that website will be visited by more number of guests. SEO guarantees that a website is available to search engines. Owned by Google, Inc., Google is the largest search engine on the web. Google receives over 200 million questions every day through its various services. The objective of Google is to arrange the world’s information to make it universally accessible.
SEO was introduced in the 1990s. Search engines use programs called “spiders” that crawl a web page and gather essential data. These data contains the contents on the web page and some codes used to construct the page. The contents and basic codes that the spiders search for on a page mainly include recommended articles, discussion forums, article archives, reports and books. Google search engine started in 1998 with 25 million web pages. Most webmasters are keen to influence their website's Google SEO rankings, as Google is the most popular search engine. There are SEO specialists who help websites raise their rankings on Google. Algorithms and search results of Google is one of the most trusted and commercial web sites try to subvert Google’s search results by fake rankings to gain profit. To weaken such attempts is the main challenge before Goolge.
Articles that attempt to elucidate the key concepts of the topic given are called recommended articles. These articles on the given topic can be opened in a new window. Article archives hold a listing of thousands of search engine articles. Article archives places articles by date and this helps the guest to get the up-to-the-minute information. Discussion forums take account of the page element on discussion. Books and reports that cover the page element being discussed is included if they are available.
In the past webmasters themselves used to give information about the pages to the search engines. But this was found to be defective since webmasters mistreated Meta tags in order to wrongly increase page impressions by adding keywords that is not needed in the contents of their pages. This made search engines to develop more complex ranking algorithms. Google search engine applies the PageRank concept to appraise web pages. Google search engine’s PageRank algorithm assesses the importance of web pages based up on the incoming links. With the efficacy of PageRank algorithm, Google Search engine became one of the most dependable and popular search engines.
Apart from searching webpages, the Google also provides services for searching images, news websites, videos, Usenet newsgroups, searching by locality, maps, and stuff for sale online.