Interaction is not only important in face-to-face environments but also in web-based environments as well (Moore, 1989; Driscol, 2002; Anderson & Garrison, 2003). According to Kearsley (1998), in the broadest sense, interaction is the centre of social expectations of education and the chief objective of bigger education process in itself and a feedback that is necessary to be set between student and instructor during learning process.