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Stock-Based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Summary of stock-based compensation expense [Abstract]        
Total stock-based compensation expense $ 193,500 $ 36,800 $ 759,000 $ 71,400
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]        
Weighted average fair value of options granted (in dollars per share) $ 0.13   $ 0.16  
Shares fully vested (in shares) 5,975,242   5,975,242  
Shares expected to vest in future (in shares) 7,309,111   7,309,111  
Shares expected to be forfeited (in shares) 238,008   238,008  
Stock option vesting term     33 months  
Unrecognized compensation cost 1,202,200   1,202,200  
Weighted-average period unrecognized compensation cost to be recognized     26 months  
Stock Options [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]        
Outstanding - Beginning of Period (in shares) 14,161,715   11,636,694  
Granted (in shares) 700,000   4,612,500  
Exercised (in shares) (436,363)   (567,176)  
Forfeited or expired (in shares) (902,991)   (2,159,657)  
Outstanding - End of Period (in shares) 13,522,361   13,522,361  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]        
Outstanding - Beginning of Period (in dollars per share) $ 0.19   $ 0.18  
Granted (in dollars per share) $ 0.15   $ 0.20  
Exercised (in dollars per share) $ 0.08   $ 0.08  
Forfeited or expired (in dollars per share) $ 0.19   $ 0.20  
Outstanding - End of Period (in dollars per share) $ 0.19   $ 0.19  
Weighted average remaining contractual terms (in years) 7 years 3 months 22 days   7 years 3 months 22 days  
Aggregate intrinsic value 1,472,800   1,472,800  
Restricted Stock [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]        
Outstanding - Beginning of Period (in shares) 0   0  
Awarded (in shares) 3,964,500   3,964,500  
Released (in shares) 0   0  
Forfeited (in shares) 0   0  
Outstanding - End of Period (in shares) 3,964,500   3,964,500  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]        
Outstanding - Beginning of Period (in dollars per share) $ 0   $ 0  
Awarded (in dollars per share) $ 0.18   $ 0.18  
Released (in dollars per share) $ 0   $ 0  
Forfeited (in dollars per share) $ 0   $ 0  
Outstanding - End of Period (in dollars per share) $ 0.18   $ 0.18  
Weighted Average Remaining Recognition Period     2 years 10 months 13 days  
Unrecognized Compensation Cost Remaining 693,800   693,800  
Costs of revenue [Member]
       
Summary of stock-based compensation expense [Abstract]        
Total stock-based compensation expense 6,700 300 17,100 2,300
Selling and marketing expense [Member]
       
Summary of stock-based compensation expense [Abstract]        
Total stock-based compensation expense 33,200 (6,200) 84,800 2,700
General and administrative expense [Member]
       
Summary of stock-based compensation expense [Abstract]        
Total stock-based compensation expense 71,000 28,700 404,700 46,300
Research and development expense [Member]
       
Summary of stock-based compensation expense [Abstract]        
Total stock-based compensation expense $ 82,600 $ 14,000 $ 252,400 $ 20,100