The following ===> infographic <=== covers the topic of social media and how it affects our content.
Would you imagine how social networking would be if there were no websites in the calibre of Stumble Upon, Twitter, Reddit, Digg, and Facebook ? I don't think we will have the same easy and instant access to the information as we do now.
We should be so thankful to those people behind the creation of such tools especially when we measure their importance and benefit in education.
Via Gust MEES, Vingtcinq Scenario