I would call some of these methods listed in Batinic, et al., "social psychology" but there's lots of room for exploration. I don't specifically remember online interviews but their techniques were generally very useful for a variety of online data collection.

From the publisher's blurb: "The studies reported utilize Web-based questionnaires, Web experiments, observations of virtual worlds, case narrations, content analyses, and analysis of mailing-lists and other log data."

Batinic, B., Reips, U.-D., & Bosnjak, M. (Eds.). (2002). Online Social Sciences. Seattle: Hogrefe & Huber. I personally found Wengraf to be a good source for interview methods, particularly biographical interview (nothing to do with online interviewing). Wengraf, T. (2001). Qualitative research interviewing: Biographic narrative and semi-structured methods. Thousand Oaks: Sage. He's got another book: Bornat, J., Wengraf, T., & Chamberlayne, P. (Eds.). (2000). The Turn to Biographical Methods in Social Science. London: Routledge. Of course there's Denzin. Cheers, Denise Denise N. Rall, PhD candidate, School of Environ. Science, Southern Cross University, Lismore NSW 2480 Sustainable Forestry Mentoring Coordinator & Internet Researcher Room T2.12, +61 (0)2 6620 3577 Tuesdays or Mobile 0438 233 344 http://www.scu.edu.au/schools/rsm/staff/pages/drall/index.html