For Roby Muhammad, 37, social media networking is not just for socializing. He can use a person's Facebook status or Twitter posts as research material. "Tweets can be used for research, as a public happiness index, he said.

The field of social media science, which uses the Internet as a research tool, is Roby's field of expertise. He learned about this field during his master's studies and the doctoral program at Columbia University, United States,