ABSTRACT
The chapter deals with the perception of media influences and the consequences of presumed media influences. It provides an inventory starting with an outline of the central assumptions of the third-person effect and the influence of presumed media influence approach. This chapter discusses on the assumptions to be reconsidered with respect to online communication and its specific characteristics. The presumed influences and their consequences have undertaken in the field of political communication. Research on presumed influences of political content is different from research on presumed influences in other fields. The political influences online media can be assumed, Web 2.0 media believed to have mobilizing effects on others and the role of Twitter in the context of political uprisings. It indicates that the use of Facebook, Twitter, or one's own website for political public relations be motivated by a desire to give an unfiltered portrayal of oneself rather than by the belief that such activities strongly influence other people.
