Abstract
Nowadays, we can use many communication services via the Internet. Social concern over communication spaces that allow us to use avatars like "Second Life" has beng rowing. On the other hand, online games which have a text-based communication system have also grown since the 1980's. However, the definition and con nection betwe en avatar-based com munications and text-based com munications remains confusing. The main purpose of this paper is to organize information on these communication sand to examine the conections between them. Based on the examination result, I identified the issues and methodology for the studies which dealt with not only online games but also Internet-based communication.
