Facebook status updates tell us the emotional health of the nation and the Gross National Happiness of members. 300 million ? 400 million? of ‘em.
We talk a lot about sentiment measurement in social media measurement classes. What constitutes a good sentiment, or bad. Does a computer understand sarcasm or vernacular “that car was da bomb” doesn’t mean it’s an old bomb, apparently. This is quite a different use of sentiment and Facebook: