Angry Tweeters, Tweeters who use words like "hate", curse words and even expressions like "blah" and "um"would be red-flagged, but would they really be psychopaths?
"People’s nasty traits have a way of revealing themselves on social networks: in writing. Or rather in how they write. That means an analysis of how someone tweets could reveal whether he or she is narcissistic, Machiavellian, or psychopathic."More on the research, click on the link.
Link via Neatorama