The following graph compares, for the five year period ended December 31, 2013, the total cumulative
stockholder return on the Company’s common stock with the total cumulative return of the NASDAQ Composite
Index, the S&P 500 Index and the S&P North American Technology Internet Index. The Company was added to
the S&P 500 Index on December 18, 2010. Measurement points are the last trading day of each of the
Company’s fiscal years ended December 31, 2008, December 31, 2009, December 31, 2010,