AOB: Common stock, $0.001 par value; 150,000,000 shares authorized; 78,915,514 shares and 78,598,604 shares issued as of June 30, 2011 and December 31, 2010, respectively; 78,466,351 shares and 78,598,604 shares outstanding as of June 30, 2011 and December 31, 2010, respectively