October 15th, 2011 
admin 
The main purpose behind the Google Search engine is to find the text from Web pages from all over the web or internet. This was developed by Larry Page and Sergey Brin in 1997. Google provides many other special features beyond the original word search capability. These include time zones, stock quotes, maps, earthquake data, synonyms, weather forecasts, movie showtimes, airports, home listings and many extra things. There are special features for numbers, including ranges (70..73), prices, temperatures, money/unit conversions (“10.5 cm in inches”), calculations (“3*4+sqrt(6)-pi/2″), area codes, package tracking, patents, and language translation of displayed pages. In June 2011, Google add some more features, Google introduced “Google Voice Search” and “Search by Image” features to enable the users to search words or text by speaking and by giving images for those words and text.
Now, the frequency of use of many search terms have reached a volume that they may indicate broader health, economic and social trends. Various data about the frequency of use of search terms on Google (available through Google Adwords, Google Trends, and Google Insights for Search) have been shown to correlated with diseases outbreaks, to indicate unemployment levels, to provide the information faster than traditional reporting methods and even in government surveys too.
Later various service has been added to Google.
google games, google gothic, google homepage, google images, google instant, google loco, google logo, google mail, google news, google pacman, google scholar, google search, google street, google talk, google toolbar, google translator, google url, google usa, google video, google voice, google map.