This very recent compilation (2005) contains 11 scholarly articles on the subject of adolescent girls and their use of the web, from perspectives of age, gender, ethnicity, and sociology/media theory.  With regard to the subject of teenage girls and fandom, I am interested in Scodari's work on the negotiation of age and gender in TV fan newsgroups, since I am also discussing women's speech in such groups.  Mazzarella continues this topic with her discussion of the "cultural economy" of teenage girls fandom on the internet.  Finally, Thiel takes on the description of the construction of identity and gender identification for girls over instant messaging, which she describes as both a cultural and an experimentation space.  While this text does not discuss specific linguistic topics, it does serve as an interesting sociological reference for young women's behavior on the internet, which could influence or inform linguisitic decisions online.