Text Message To Keep You Healthy

There ia a great article on Textually.org ( http://www.textually.org ) blog about how text messaging is being used to help keep people healthy. This is something we have been focused on over the last few years. There is a report noted in the article: ( http://sites.mckesson.com/mprs/images/page/pc_mckesson_reprint_7-21.pdf )
That outlines the problem.

Do you think this is effective? I would love to hear your thoughts.