Isolated by the Internet

The Internet was supposed to open the world to us, but I wonder if we are being isolated by it instead. I think we need to ask some questions of ourselves:

• Where do you get your news?
• What sites do you visit?
• Who do you friend, follow, link to?
• Who do you communicate with?

If the answers to these questions is people like me or people who share my views or people who support my views,  then I think there may be a problem here.
I just listened to a great TED talk Ethan Zuckerman: Listening to global voices  which got me thinking about this issue.  (I'm developing my thoughts on this, so by the time it gets out, this might be an old issue.) He contends that the problems today are getting more global, but the news is getting less so.
I agree. You can see it in the unwillingness of people to listen to other views or to incorporate them into their world-view. We friend and follow and like, but I wonder how many differing opinions we allow onto these lists. I wonder how much effort we take to seek out opinions which don't support our own or to discover new and interesting things to expand our view of the world? Not much, for most of us, is probably the answer.