"6.9 trillion SMS messages were sent in 2010. This is expected to rise to over 8 trillion in 2011"
Source:
Portio Research, 2011
Shortcodes…
We provide two shortcode options; shared and dedicated. Our
shared shortcodes come with their own specific keyword (eg. text
OFFER to 81025), or alternatively our dedicated shortcodes do not
require a keyword (eg. text your answer to 80666).