A computer science graduate has studied the trials and tribulations of "middle-aged SMS users". Christine Soriano presented her experiment at the Australasian Computer Science Week conferences in Hobart yesterday. The study found a range of physical and personality characteristics hindered the subjects, aged 35 to 60, as they battled to handle SMS.
Link: http://www.themercury.news.com.au/common/story_page/0,5936,17865813%255E3462,00.html
I don’t think my mum will ever use it, let alone my gran. Ultimately, the medium is limited by this issue.