Mood of UK Twitter users between 2009 and 2012, extracted by sentiment analysis and displayed as a timeline and by face expression.
For more details see: http://mediapatterns.enm.bris.ac.uk/twittermood.
Thomas Lansdall-Welfare, Vasileios Lampos, Nello Cristianini: Effects of the Recession on Public Mood in the UK. Accepted for publication in the International Workshop on Social Media Applications in News and Entertainment (SMANE), 2012.