Abstract
"Mail box" is a site which is linked to a Profile site, a Hompe site (Simple homepage) and so on. In this study, semi-structured interviews were carried out to nine girls' junior and senior high school students to clarify its use of adolescent girls. As a result, we found that some girls used it to contact with students who belonged to other groups and classes in the same school. Moreover, some of them used it to contact with strangers in their school life and make boyfriends. On the other hand, they suffered cyber stalker's damage by using it.
