CNN and Facebook have unveiled the Facebook-CNN Election Insights tool, which displays the real-time number of people talking about President Barack Obama, Vice President Joe Biden, presumptive Republican presidential nominee Mitt Romney and his vice presidential pick, Rep. Paul Ryan. Facebook-CNN Election Insights—found at CNN.com/FBinsights—displays dynamic, real-time charts and visualisations using Facebook Insights to gauge the volume of Facebook activity surrounding the election … [Read more...] about CNN and Facebook launch U.S. election interactive tool