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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Stock-Based Compensation [Abstract]  
Summarizes of stock-based compensation expense
The following table summarizes the stock-based compensation expense, net of amounts capitalized, we recorded in our Unaudited Condensed Consolidated Statements of Operations for the three and six-month periods ended June 30, 2012 and 2011, respectively, by classification:
 
 
   
Three Months Ended June 30,
  
Six Months Ended June 30,
 
Statement of Operations Classification
 
2012
  
2011
  
2012
  
2011
 
Costs of revenue
 $4,100  $1,000  $10,400  $2,000 
Selling and marketing expense
  25,200   4,200   51,600   8,900 
General and administrative expense
  260,600   14,700   333,700   17,600 
Research and development expense
  86,200   3,900   169,800   6,100 
   $376,100  $23,800  $565,500  $34,600 
Assumption used to estimate fair value of stock based award granted
We estimated the fair value of each stock-based award granted during the three-month and six month periods ended June 30, 2012 and 2011 as of the respective dates of grant, using a binomial model with the assumptions set forth in the following table:
 
   
Estimated Volatility
  
Annualized Forfeiture Rate
  
Expected Option Term (Years)
  
Estimated Exercise Factor
  
Risk-Free Interest Rate
  
Dividends
 
2012
  70% - 174%  0.00% - 9.19%  0.25 - 10.0   5 - 15   0.18% - 2.04%  - 
2011
  180% - 185%  2.00%  7.5 - 10.0   20 - 150   2.82% - 3.24%  - 
Summaries of the status and activity of our stock option awards
The following table presents summaries of the status and activity of our stock option awards for the three-month period ended June 30, 2012.
 
Number of Shares
 
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Terms (Years)
Aggregate Intrinsic Value
Outstanding - March 31, 2012
 
 
13,983,105
 
 
$
0.19
 
Granted
 
 
1,410,000
 
 
 
0.18
 
Exercised
 
 
(74,724
)
 
 
0.06
 
Forfeited or expired
 
 
(1,156,666
)
 
 
0.21
 
Outstanding - June 30, 2012
 
 
14,161,715
 
 
$
0.19
 
6.83
$ 187,700
 
The following table presents summaries of the status and activity of our stock option awards for the six-month period ended June 30, 2012.
 
Number of Shares
 
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Terms (Years)
Aggregate Intrinsic Value
Outstanding - December 31, 2011
 
 
11,636,694
 
 
$
0.18
 
Granted
 
 
3,912,500
 
 
 
0.21
 
Exercised
 
 
(130,813
)
 
 
0.06
 
Forfeited or expired
 
 
(1,256,666
)
 
 
0.21
 
Outstanding - June 30, 2012
 
 
14,161,715
 
 
$
0.19
 
6.83
$ 187,700