different in personality

Before you proceed your task, please read the articles from the following websites (just click the hyperlink):

http://www.academia.edu/1031203/Ranking_Web_Portals_Quality_Criteria_Based_on_Different_Types_of_Personality

four temperament http://en.wikipedia.org/wiki/Four_temperaments

after you read them, choose one topic that interest you and explain more about the different of personality

four temperament