Basically, unless you're willing to write down debts and save the economy, you're going to have deflation and a steady drain in purchasing power - that is, shrinking markets.

The vast majority of $100 bills are abroad, not in the United States. So yes, of course there's a use here but nowhere near as much as there's a use for $100 bills abroad.

People have to pay so much money to the banks that they don't have enough money to buy the goods and services they produce. So there's not much new investment, there's not new employment (except minimum-wage "service" jobs), markets are shrinking, and people are defaulting. So many companies can't pay their banks.

If a lot of money goes into the stock market, it'll push up prices, making money for stock speculators. Then the insiders can decide that it's time to sell out, and the market will plunge.

Almost all of the demand for oil that suddenly pushed prices up was speculative demand. People began to speculate not only in stocks and bonds and real estate, but also in commodities. The market went up for old tankers, which were used simply to store oil in. A lot of the oil was simply being stored for trading, not used.

There are so many currency exchange rate problems that people are buying gold as a safe haven. Right now, gold looks like a safe haven if international exchange rates break down.

There are many ways to create economic suicide on a national level. The major way through history has been through indebting the economy. Debt always expands to reach a point where it cannot be paid by a large swathe of the economy. This is the point where austerity is imposed and ownership of wealth polarizes between the One Percent and the 99 Percent.