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Net Loss Per Share Applicable to Common Stockholders (Tables)
9 Months Ended
Sep. 30, 2012
Net loss per share:  
Net Loss Per Share Applicable to Common Stockholders
  

Three Months Ended

September 30,

 

Nine Months Ended

September 30,

   2012  2011  2012  2011
Numerator:                    
Net loss  $(982,823)  $(727,369)  $(2,609,997)  $(2,047,806)
                     
Denominator:                    
Weighted average common shares outstanding used in computing net loss per share:                    
Basic and diluted   4,861,063    4,439,997    4,851,152    4,202,929 
                     
Net loss per share:                    
Basic and diluted  $(0.20)  $(0.16)  $(0.54)  $(0.49)