I came across this really great article today on The Guardian website - 'The role of social media in community building and development' It explores how despite the increasing importance of social networks, community development needs to take place both on and offline.
I saw a talk from a guy who worked for Amnesty International a few months ago and he cited the exact same argument; that we can all get carried away with technology, but remember we shouldn't alienate those who don't have access to it.
We still need to interact, talk and get to know each other away from our laptops, tablets and mobiles. Actual human contact is just as import as the having 500+ friends, or followers on Facebook and Twitter.