The US EAST coast is always are always kind of pissed, at least that’s what the emotional words contained in hundreds of millions of tweets reveal

Computer scientist Alan Mislove at Northeastern University in Boston and colleagues have found that these “tweets” suggest that the west coast is happier than the east coast, and across the country happiness peaks each Sunday morning, with a trough on Thursday evenings. The team calls their work the “pulse of the nation”.
Over 300 million tweets were analysed, each of which was awarded a mood score based on the number of positive or negative words it contained. For example, “diamond”, “love” and “paradise” indicate happiness, whereas “funeral”, “rape” and “suicide” are negative. “Dentist” is fairly neutral.

The researchers calculated the average mood score of all the users living in a state hour by hour and so created a timed series of mood maps. They morphed the maps so that the size of each county reflected the number of Twitter users living there.

The mood of the nation at midday and 11 pm EST

read more here
+via