Forbes did a write up of the predictions of Daniel K.N. Johnson who looks at economic, social and other factors to come up with a prediction of what countries will win what medals.

http://www.forbes.com/2010/01/19/olympic-medal-predictions-business-spor...

He predicts the United States will win 26 medals and 5 gold. As of today the USA has 24 total and 7 golds. Kind of close.