1.4 billion texts are sent daily in the US in 2009, twice as many as in 2008

"Some 740 billion text messages were sent in the first half of 2009 in the U.S. This according to the CTIA’s semiannual wireless industry survey, which helpfully breaks down that astonishing figure to an even more astonishing 4.1 billion texts per day. That’s about double the number sent during the same period last year. And keep in mind, we’re only talking about the United States here, not the rest of the world."
Source: CITA Wireless Industry Survey, reported by Digital Daily, 8th October 2009