Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net loss	$ (4,085,768)	$ (1,731,050)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	260,861	191,141
Compensation associated with issuance of stock options	2,583,505	1,359,892
Changes in assets and liabilities:
Decrease in accounts receivable	8,022,926	80,410
(Increase) in prepaid expenses	(85,902)	(83,253)
(Increase) decrease in other assets	(19)	5,929
Decrease in accounts payable and accrued expenses	(636,812)	(524,355)
Decrease in deferred revenue	(640,559)	(361,838)
Net cash provided by (used in) operating activities	5,418,232	(1,063,124)
Cash flows from investing activities:
Acquisition of property and equipment	(330,065)	(350,350)
Acquisition of intangibles		(1,100,000)
Net cash used in investing activities	(330,065)	(1,450,350)
Cash flows from financing activities:
Payments on capital lease obligation	(32,747)	(30,338)
Proceeds from exercise of warrants	991,239	3,766,984
Proceeds from employee stock option exercises	771,815	1,090,933
Net proceeds from issuance of common stock	436,771	261,327
Net cash provided by financing activities	2,167,078	5,088,906
Net increase in cash and cash equivalents	7,255,245	2,575,432
Cash and cash equivalents at beginning of period	3,595,076	1,900,014
Cash and cash equivalents at end of period	10,850,321	4,475,446
Non-cash financing activities:
Cashless exercise of warrants	1,204	4,320
Cash paid during the period for:
Interest	$ 3,102	$ 8,927