This is what I predicted at http://canonizer.com/topic.asp/154/6 on August 27, 3013.  Since then, I have formed the opinion that my formula was too conservative.  I now expect the value of a Bitcoin to reach $1,000 by June, 2013.

"By plotting a predictive exponential curve that maximally fits current Mt. Gox close data since the first recorded date of July 17, 2010, it is possible to glean a formula that roughly tracks the following equation:
Predicted value of Bitcoin=(0.208641165)*[(1.005309994)^(Number of days since July 17, 2010)]
According to this formula, the value of a Bitcoin on December 8, 2014 will be $1,003.92.
The use of this formula assumes that the rate of Bitcoin's exponential rise will not succumb to a slowdown due to currency market saturation until sometime after 2014."