Technology accelerates change at an accelerated rate. While this could be beneficial to society, the main driver of innovation or creation of technology remains capitalism.
Guy Kawasaki has made some great points about how a business, founded in capitalism, should find purpose to make the world a better place. In many cases those changes brought on by a given technology isn't obvious until the technology has been adopted in a widespread way.
Facebook may "help" people connect and discuss important matters, but it also created a conduit (deluge) of information which hijacks people's attention away from things that may serve them better in the long run. It's when technology like Facebook, Twitter and other social media platforms push data to us that we give way, emotionally, to the influence.
When emotions get involved, attention is diverted.