Rick Santelli on CNBC answered the question today.
Very few places to put your money:
1-In the mattress-cash.
2-In the ground-metals, energy.
With investors worried about interest rates rising and potentially no QE 3 , money could come out of bonds.
In the WSJ today the data shows $7.84B out of Money-Market Assets than they put into retail funds, as investors sought higher returns.