I really like this quote from Arianna Huffington. I am an optimist about social media, and I very much believe in using it to bear witness. At the same time, there's a lot of distraction going on too!
The quote is from an article you can read here: Virality Uber Alles: What the Fetishization of Social Media Is Costing Us All
Social media can help us bear witness more powerfully or they can help us be distracted more obsessively.