FWIW ... Joe Jenders has told me that upon reviewing the 90Minds member list, he saw Dawn's group and is re-thinking the whole thing. They are apparently (from reading both sides) bitter rivals.
It's a shame as I think Joe is great and I know he is a solid contributor in the other group that I'm in. I don't know Dawn as well but I did get a chance to meet with her at Summit and she seems great too.
For the sake of all, I think there has to be a ""first mover"" rights to protect existing members when these situations arise. The debate about being a full 90 Minds member vs only a Sage Reseller group member is lost on me but it seems specious. I don't know the history though.