Collective mood states on Twitter predict 86.7% of stock movements 3 days later ??? John Bollen

Gross National Happiness (GNH)

This information is gleaned from Facebook statuses.  Wow. 

https://apps.facebook.com/gnh_index/?c=US

Notice that the positivity on the US GNH spikes on the weekends and holidays.  New Year’s Eve is the happiest day of the year.

 You can even zoom in and out on the graph, and look at the GNH of other countries.