The jump in the bitcoin exchange rate this week also coincides with concerns euros could be taken from retail bank accounts in Cyprus to fund a bailout.

WSJ: Bitcoin Virtual Cash Gets Money-Laundering Rule

Peso prices would immediately jump to reflect any new exchange rate.

ECONOMIST: Keeping the reform alive | The

As of the end of last week, the combined totals from the London Metal Exchange, Shanghai Futures Exchange and Comex division of the New York Mercantile Exchange stood at 892, 084 tons, a jump of 51% from 588, 881 at the end of last year, said John Gross, an independent metals-industry consultant.

FORBES: FOCUS: Copper Market 'Guarded;' Near-Term Bounce Occurring But Longer-Term Retreat Expected

For U.S. investors without the wherewithal to jump around in international equties, there are exchange-traded funds like the iShares MSCI Germany Index Fund, which counts Siemens, power and gas company E.

FORBES: Buy Germany As Euro Falls

In one e-mail exchange, a Goldman banker invites colleagues to join in a betting pool on how much Archipelago's stock would jump the day the deal got announced.

FORBES: Careful What You E-Mail!