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12. Derivative Liabilities (Derivative Liabilities, USD $)	3 Months Ended
	Mar. 31, 2013
Derivative Liabilities
Estimated fair value of underlying common stock	$ 0.15
Remaining life	3 years 2 months 12 days
Risk-free interest rate	0.38%
Expected volatility	140.70%
Dividend yield

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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