5 Billion Text Messages / Month

I had just finished writing the "Fun  with Numbers" post below, when I came across this from friend Pat Phelan's  Roam4Free blog:

"US mobile operator Verizon Wireless has announced that its customers sent and received over five billion SMS messages in September, a record for both the company and the US mobile industry. This is equal to growth of 150 percent or three billion messages per month from September 2005."

Stunning.