The rouble's exchange rate yo-yos, falling by a third one day, rising by a quarter the next.

ECONOMIST: Russia shipwrecked

In Brazil, until it relaxed the rules last year, some governors moved in and out of office like yo-yos.

ECONOMIST: Two terms and you��re out

Once the economy gets back to something resembling normalcy and stock markets stop gyrating like yo-yos, I think a lot of investors will take their gold profits and move back to equities.

FORBES: The New Gold Rush

Look at them yo-yos!

FORBES: The Grave Economic Consequences Of Money For Nothing