Net Loss Per Share	6 Months Ended
Jun. 30, 2014
Net Loss Per Share	6. Net Loss Per Share Basic net loss per share is calculated by dividing the net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding during the period and giving effect to all potentially dilutive common shares using the treasury-stock method. For purposes of this calculation, common stock subject to repurchase by us, outstanding options, stock awards, warrants and Series B Convertible Preferred Stock are considered to be potentially dilutive common shares and are only included in the calculation of diluted net loss per share when their effect is dilutive. Outstanding warrants, stock options, Series B Convertible Preferred Stock and stock awards totaling approximately 76,300,000 and 31,700,000 shares of common stock as of June 30, 2014 and 2013, respectively, were excluded from the calculation of diluted net loss per share for the three and six months ended June 30, 2014 and 2013, because the effect of their inclusion would have been anti-dilutive.

Net Loss Per Share

6 Months Ended

Jun. 30, 2014

6. Net Loss Per Share

Basic net loss per share is calculated by dividing the net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is computed by dividing the net loss by the weighted-average number of common shares outstanding during the period and giving effect to all potentially dilutive common shares using the treasury-stock method. For purposes of this calculation, common stock subject to repurchase by us, outstanding options, stock awards, warrants and Series B Convertible Preferred Stock are considered to be potentially dilutive common shares and are only included in the calculation of diluted net loss per share when their effect is dilutive. Outstanding warrants, stock options, Series B Convertible Preferred Stock and stock awards totaling approximately 76,300,000 and 31,700,000 shares of common stock as of June 30, 2014 and 2013, respectively, were excluded from the calculation of diluted net loss per share for the three and six months ended June 30, 2014 and 2013, because the effect of their inclusion would have been anti-dilutive.

- Definition

The entire disclosure for earnings per share.

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