NET LOSS PER COMMON SHARE DATA

6 Months Ended

Jun. 30, 2012

NET LOSS PER COMMON SHARE DATA

NET LOSS PER COMMON SHARE DATA

8. NET LOSS PER COMMON SHARE DATA

        The following table sets forth the computation of basic and diluted net loss attributable to common stockholders per common share, as well as a reconciliation of the numerator and denominator used in the computation:

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Net loss	$	(2,338,538	)		(2,210,339	)	$	(5,719,182	)		(4,145,669	)
Loss on deemed Preferred Stock redemption					(6,906,566	)					(6,906,566	)
Net loss attributable to common stockholders	$	(2,338,538	)		(9,116,905	)	$	(5,719,182	)		(11,052,235	)
Denominator:
Weighted-average common shares outstanding		7,821,058			2,164,523			7,806,241			2,163,846
Basic and diluted net loss per common share	$	(0.30	)		(4.21	)	$	(0.73	)		(5.11	)

        The weighted-average common shares outstanding above includes 100,000 shares underlying exercisable options nominally priced at $0.02 per share.

        The following equivalent shares were excluded from the calculation of diluted loss per share as their impact would have been anti-dilutive:

	Six Months Ended June 30,
	2012		2011
Options to purchase common stock		1,811,941		2,081,774
Warrants		2,215,680		636,276
Restricted stock		122,167		191,166
Convertible preferred stock (as converted basis)				1,448,333