It's certainly changed the way people communicate. Nobody picks up the phone and calls anymore. We're all texting and/or tweeting and that seems to be largely a waste of time. Some would think we're communicating more. I think we're just creating more noise and communicating less.
I don't think to much of it . I had to use Facebook when my son was in Turkey and it was a pain ! Now that he's home , the phone is fine ! The privacy of a phone call is good enough for me ! I tried texting for a while and quit that too ! You lose track of proper use of language and spelling ! I have friends and relatives all over the States and it's much nicer to hear their voice ! I plan on keeping it that way !