New paper (warning: link contains tons of geeky math) uses Twitter keywords over last three years to try and characterize  happiness.  Below is the key graph, which shows that people are sadder than when Lehman failed.

Twit hap 2

H/T to Paul Kedrosky

Get Our Free In-Depth Books On Famous Investors and like our Facebook page for latest news updates and leaks. Also sign-up for our free under the radar small cap newsletter.