Dodgeit.com allows you to create throwaway email addresses. It then delivers the email that comes into the resulting mailbox as an RSS feed that you and everyone else who can guess at your throwaway email address can read.
Pick a throwaway address, say: NotMyAddress@dodgeit.com Give that address out to inconsequential sites.
Check NotMyAddress from homepage of Dodgeit.com.
Subscribe to an RSS feed to keep an eye on the mailbox.