Twitter CEO Dick Costolo Is Ready for His Close-Up: The Full D9 Interview

Twitter CEO Dick Costolo is well-known in Silicon Valley as a funny guy, but he trotted out some serious stats in this onstage interview with Walt Mossberg at the recent ninth D: All Things Digital conference.
Among the many topics: Acquisition interest by Google and others; its new photo sharing service; the evolving business plan of Twitter; and how Costolo does not have a super-secret Mach 20 government plane to impress the crowd, even if the microblogging service is growing fast.
Still, as you will see, Costolo is pretty quick.