Well I also have the same issue, but I prepared ahead of time for this.
I have 4 emails going through an email forwarding service ( pobox.com) those are the emails I give when ever I sign up to anything.
Lately one of my "spam" email addys that I knew would be abused, has been lit up... so I just disabled that faux addy and changed to a new one. there by eliminate'n all the spam
What I want to do is setup a auto reply on that email addy sending some very crude and vulgar email to them