The ending of the Gov HIT article really does put social media into perspective for public health, who always seems to want/need to reach more and more people ... faster. So, I'll leave you with it
"But in spite of the potential risks, agencies view social media as the future of mass communication. “Many social media channels provide amazing reach and new ways to target and tailor information to diverse audiences,” Aikin said. “Using social media also allows us [to deploy] tools that are already being used by a growing segment of the population, which helps us ensure that increasing numbers of people have access to our messages.”"