5. Google ( GOOG) focuses on areas like internet search, advertising, operating systems and platforms. During the first quarter of 2011, Google reported revenue of $8.6 billion, representing a 27% increase from the first quarter 2010 revenue of $6.8 billion. International revenue was $4.6 billion, or 53% of total revenue in the first quarter of 2011. Net income during the first quarter of 2011 was $2.3 billion, compared to $1.96 billion in the first quarter of 2010. Earnings per share for the reporting quarter were $7.04 compared to $6.06 in the first quarter of 2010. Cash and cash equivalents stood at $36.7 billion, as of Mar. 31, 2011. Google's full-time employee strength was 26,316. Of the 41 analysts tracking the stock, 34 rated a buy and 7 maintained a hold. The stock is trading at 15.7 times its estimated 2011 earnings with an estimated upside of 34%, according to analysts poll conducted by Bloomberg.