[Air-l] ethics question in researching the internet

In regard to the case of an online hate group discussed, I have a general question: When is an online group "public"? Would a group with no special registration requirement qualify? Would a group where any identifyer can serve as a userid fit, or one that doesn't check email addresses? In any or all of the cases which might be "public", is it okay to research them without (a) announcing the intent, and (b) without seeking permission of all of the members? Are archives of public communities exempt from consent, a question already raised? I have read the latest draft of the AOIR guidelines and still seek input from members on these questions. Thanks. --Andrea Baker Ohio University