Myers-Briggs Type Indicator
The latest meme going around is a version of the Myers-Briggs Type Indicator test. While a fun and entertaining test, the Myers-Briggs, for many reasons has limited reliability and validity. So like most people in psychology and mental health, I recommend not taking the results too seriously. For more information see the wikipedia article at en.wikipedia.org/wiki/Myers-Briggs_Type_Indicator. Brian Dunning did a very good piece on it recently which you can listen to at skeptoid.com/episodes/4221.