They already have. Check out our site, http://trendistic.com/ . We have been tracking trends on Twitter for the past year, and we've seen all sorts of phenomena, from grassroots campaigns: http://trendistic.com/iranelection/_90-days 5o get-followers-quick spam, politics, etc. http://trendistic.com/followers/_180-days (click anywhere on the chart to see what people were saying at the time).
Peace Corps Online writes "Vascular surgeon David Nott performed a life-saving amputation on a boy in DR Congo following instructions sent by text message from a colleague in London. The boy's left arm had been ripped off and was badly infected and gangrenous; there were just 6in (15cm) of the boy's arm remaining, much of the surrounding muscle had died and there was little skin to fold over the wound. 'He had about two or three days to live when I saw him,' Nott said. Nott, volunteering with the medical charity Medecins Sans Frontieres, knew he needed to perform a forequarter amputation requiring removal of the collar bone and shoulder blade and contacted Professor Meirion Thomas at London's Royal Marsden Hospital, who had performed the operation before. 'I texted him and he texted back step by step instructions on how to do it,' Nott said."
Obviously it depends on how much you fly. So far this year I've flown 27 segments (take offs and landings) on work assignments. I wonder what's the average per person.