It seems there's a bunch of hearth.com members who also frequent ArboristSite, so this may be of interest. I registered over there on 7/3/12, and within an hour or two, spam started flooding the inbox of every account in the small domain I used for my ArboristSite registration address. Not sure if anyone else has received a huge uptick in their spam receipts after registering over there, but I'd be interested to know.