So take social media; take a look at the way they're used. In a lot of ways they're used constructively; lot of things are done that couldn't be done before. On the other hand a lot of the effect of social media is to set up extremely superficial contacts amongst people.
I don't use the social media but I can see the effects in my own correspondence. I get a ton of correspondence. It used to be hard copy and now it's a very limited amount of actual letters people write. So it's mostly email.