my real email and spam

I'm looking for a site that would check whether a site sold its user's emails by making false ones and checking if the brand new email got spam. dose anyone know of such a site?

mailinator.com

some websites ban mailinator.com domain
you can also use:
http://mytrashmail.com/
http://mailnull.com/
http://spam.la/
http://dodgeit.com/
http://spambob.com/
http://www.temporaryinbox.com/
http://www.pookmail.com/
http://www.spamgourmet.com/
http://trashmail.net/

:)