I do this for every site I sign up for. I have a 'catch all' email address, so I can put whateverIwant@mydomain.com and the emails will get to my inbox. So now

I do this for every site I sign up for. I have a 'catch all' email address, so I can put whateverIwant@mydomain.com and the emails will get to my inbox. So now I know who is selling or leaking my email address. So far it's been very few, but I also don't sign up for new sites very often.