I think for this site it's the first one, the home one, and I use it for DAZ as well as a number of other 3D related sites,  in fact this particular one is probably used quite a bit for different site memberships by myself and others so it's been around the net a bit but call it fools luck or something the address rarely recieved much in the way of more then the occasional SPAM letter or two until all the Scam stuffs which suddenly ceased as mysteriously as they started.

One thing I can say with regard to Rendo stuff is that though I've recieved e-mails from different members at different times, I've always responded to them via on-site PM rather then sending an e-mail back to them.  And my e-mail is hidden on my profile.

But I do recieve a regular amount of daily e-mail from Rendo in the areas I've mentioned which hasn't changed either before, during, or after the scam e-mail spamming.

Hope that helps ^^