[Air-L] Ethics in online virtual worlds

[Kevin Sherman]

I will be interviewing and observing avatars within Second Life as
research for my phd.  I have been asked by my ethics board to obtain
hard copy signature consent from my participants rather than online
digital consent.  Can anyone direct me to literature pertaining to the
practicalities of informed consent in online virtual worlds (mmogs,
mmorpgs, second life, etc..) or discuss their own experience with this? 

Thank you,
Kevin