David, I haven't seen Annette Markham's Life Online mentioned in this discussion so far. She does some very close ethnographic description of the online experience in MUDs which could be quite helpful in a phenomenological vein. She has a wonderful interview with Terri Senft, who is on this list and who I believe might also have some smart things to say about phenomenology, performativity, and that sort of thing -- most of her writing is collected on her website or in her LiveJournal. Bonnie Nardi, who was mentioned to you earlier, is also on this list and would be a good person to pose this question to; she is normally very responsive to email but I believe she is out of the country this term and I haven't heard much from her. Try her published writing though! Kathy