Twitter getting bitter?

Researchers at the University of Vermont have culled data that suggests Twitter users have gotten sadder over the past three years. They do this by:

. . . tracking a huge number of key words, ranging from everyday, neutral words like "the" to more emotive words like "pancakes" or "suicide"

I love that in this context, pancakes are the opposite of suicide. Makes sense. Read the article here at the Verge.