1.   After the finance minister hinted the dollar would strengthen further against the yen, the U.S. currency promptly rallied, too.

2.   If the borrowing currency suddenly rallies, the cost of paying off the loan rises.

3.   Separatists leaders will be able to say that on the day that a poll shows support for their cause at a high, the currency rallied, Pyle said.

4.   The German currency rallied last week, when the Bundesbank surprised analysts and traders by leaving the repo rate steady.

5.   The last three times central banks teamed up to buy dollars they did so when the currency was already rallying.

6.   The last three times central banks teamed up to buy dollars, they did so when the currency was already rallying.

7.   The U.S. currency rallied as central banks bought it -- to the shock of currency speculators betting against the buck.

8.   The U.S. currency had rallied recently to a five-and-a-half year high against the yen.

9.   The U.S. currency rallied amid optimism that German interest rates will fall and Japanese investors will aggressively buy U.S. fixed-income securities.

10.   To be sure, many traders and investors say they doubt whether the British currency can rally further.