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FAR AS $500 YESTERDAY. THE QUESTION IS, WHY NOW? WHAT IS CAUSING THE LARGEST RALLY SINCE WAY 14? ONE REASON COULD BE CHINA. THERE HAS BEEN A SURGE IN DEMAND PARTIALLY DUE TO THE DROP IN THE STOCK MARKET. OTHER PEOPLE ARE POINTING TO GOLDMAN SACHS AND MORGAN STANLEY TAKING AN INTEREST. GIL, WHAT IS BEHIND US RALLY? -- THIS RALLY? GIL LURIA : YOU HAVE A LONG-TERM DRIVERS, HOW MUCH IS IT USED FOR REAL USES? TRANSFERRING MONEY FROM THE U.K. TO KENYA, BUYING STUFF OFF-LINE, THOSE ARE REAL USES. GETTING CAPITAL OUT OF CHINA -- THAT IS A REAL USE. THAT IS DRIVING THE PRICE UP. THERE IS ALSO TEMPORARY DRIVERS LIKE LESS REGULATION IN CHINA. DIFFERENT REGULATION IN EUROPE. A LOT OF BUYING AND SELLING IN A FLUID MARKET. YOU HAVE A COMBINATION OF BOTH. LONG-TERM FUNDAMENTAL DRIVERS, AND SHORT-TERM TRAINING -- TRADING DRIVERS. EMILY: THANK YOU SO MUCH. GEORGE, YOU'RE STICKING WITH ME. WE WILL TALK ABOUT TWITTER NEXT. THAT IS COMING UP ON THE NEXT