Google is a multinational public corporation, it develops and hosts internet based services and products. Google is one of the biggest search engines in internet and it processes a billion searches. Larry Page and Sergey Brin started Google as their research project while doing there PhD at Stanford university in California in January 1996. Google is one of most dominant search engines in United States with a market share of 65%.

Google also provides some other online softwares such as Gmail email software, social networking tools such as Orkut and Google buzz recently, also some desktop application such as with their own web browser Google Chrome, Picasa photo organisation and editing software and Google Talk messaging application. Google leads in development of their own mobile operating system Android which is now used by many leading mobile phone manufacturers such as Motorola, Nexus Etc. Google is one of the most powerful brand of these days

Google china was introduced in 2005 and was originally headed by Kai-Fu Lee. In January 2005 Google’s china based search engine www.google.cn was lunched with the result subject to censorship by Chinese government. After 5 years on leading Google China, Google announced that they and other United States technology companies had been hacked and the Google is no longer willing to censor searches in china may pull out their company of country.

Thus in 2010 March Google moved Hong Kong which is one of the Special Administrative Regions (SARs) of People’s Republic of China (PRC). Honk Kong is vested with independent judicial power and not subjected to Chinese law and also including the restrictions of free flow of information and censorship of internet materials. Google started redirecting all their search queries from google.cn to www.google.com.hk which is Google Honk Kong with passing their regulators and allowing uncensored simplified search results. As a result on March 30 2010, searching using all google search sites in all languages not only google.cn including using google mobile was banned in Mainland China, any attempts to use or search via google may results in Domain Name System(DSN) error, but other google services such as google mail and google maps was left unaffected and was free to use in China.